diff --git a/.vscode/settings.json b/.vscode/settings.json
index 8e68863..9d4f8ba 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -11,6 +11,7 @@
     "**/.venv/*/**": true
   },
   "cSpell.words": [
+    "backref",
     "bookname",
     "Btns",
     "CLEANR",
diff --git a/app/controllers/breadcrumbs.py b/app/controllers/breadcrumbs.py
index 250c90a..0cb43ac 100644
--- a/app/controllers/breadcrumbs.py
+++ b/app/controllers/breadcrumbs.py
@@ -5,11 +5,25 @@ from app import models as m, db
 from app import schema as s
 
 
+def create_collections_breadcrumb(
+    bread_crumbs: list[s.BreadCrumb], collection: m.Collection
+) -> list[s.BreadCrumb]:
+    bread_crumbs += [
+        s.BreadCrumb(
+            type=s.BreadCrumbType.Collection,
+            url="",
+            label=collection.label,
+        )
+    ]
+
+    if collection.parent and not collection.parent.is_root:
+        create_collections_breadcrumb(bread_crumbs, collection.parent)
+
+
 def create_breadcrumbs(
     book_id: int,
-    collection_path: tuple[int],
     section_id: int = 0,
-    interpretation_id: int = 0,
+    collection_id: int = 0,
 ) -> list[s.BreadCrumb]:
     """
     How breadcrumbs look like:
@@ -52,39 +66,32 @@ def create_breadcrumbs(
         )
     ]
 
-    for index, collection_id in enumerate(collection_path):
-        if collection_id is None:
-            continue
-        collection: m.Collection = db.session.get(m.Collection, collection_id)
-        if index == 0:
-            crumples += [
-                s.BreadCrumb(
-                    type=s.BreadCrumbType.Collection,
-                    url="",
-                    label=collection.label,
-                )
-            ]
-        elif index == 1:
-            crumples += [
-                s.BreadCrumb(
-                    type=s.BreadCrumbType.Section,
-                    url="",
-                    label=collection.label,
-                )
-            ]
-
-    if section_id and collection_path:
+    section: m.Section = None
+    if section_id:
         section: m.Section = db.session.get(m.Section, section_id)
+
+    if collection_id and not section:
+        collections_crumbs = []
+        collection: m.Collection = db.session.get(m.Collection, collection_id)
+        if not collection.is_root:
+            create_collections_breadcrumb(collections_crumbs, collection)
+            collections_crumbs.reverse()
+            crumples += collections_crumbs
+
+    if section:
+        collections_crumbs = []
+        collection: m.Collection = db.session.get(m.Collection, section.collection_id)
+        if not collection.is_root:
+            create_collections_breadcrumb(collections_crumbs, collection)
+            collections_crumbs.reverse()
+            crumples += collections_crumbs
+
         crumples += [
             s.BreadCrumb(
                 type=s.BreadCrumbType.Section,
                 url=url_for(
                     "book.interpretation_view",
                     book_id=book_id,
-                    collection_id=collection_path[0],
-                    sub_collection_id=collection_path[-1]
-                    if len(collection_path) == 2
-                    else collection_path[0],
                     section_id=section_id,
                 ),
                 label=section.label,
diff --git a/app/models/section.py b/app/models/section.py
index e00cffd..ac7cb9d 100644
--- a/app/models/section.py
+++ b/app/models/section.py
@@ -6,6 +6,7 @@ from app.controllers import create_breadcrumbs
 from .interpretation import Interpretation
 from .comment import Comment
 from .interpretation_vote import InterpretationVote
+from app import schema as s
 
 
 class Section(BaseModel):
@@ -46,16 +47,15 @@ class Section(BaseModel):
 
     @property
     def breadcrumbs_path(self):
-        parent = self.collection
-        grand_parent = parent.parent
-        if grand_parent.is_root:
-            collection_path = (parent.id,)
-        else:
-            collection_path = (
-                grand_parent.id,
-                parent.id,
+        breadcrumbs_path = create_breadcrumbs(
+            book_id=self.book_id, collection_id=self.collection.id
+        )
+        if len(breadcrumbs_path) > 5:
+            breadcrumbs_path = (
+                breadcrumbs_path[:3]
+                + [s.BreadCrumb(type=s.BreadCrumbType.Splitter, url="", label="...")]
+                + breadcrumbs_path[-2:]
             )
-        breadcrumbs_path = create_breadcrumbs(self.book_id, collection_path)
         return breadcrumbs_path
 
     @property
diff --git a/app/schema/breadcrumbs.py b/app/schema/breadcrumbs.py
index fb87758..11e4c1d 100644
--- a/app/schema/breadcrumbs.py
+++ b/app/schema/breadcrumbs.py
@@ -11,6 +11,7 @@ class BreadCrumbType(enum.StrEnum):
     Collection = "Collection"
     Section = "Section"
     Interpretation = "Interpretation"
+    Splitter = "Splitter"
 
 
 class BreadCrumb(BaseModel):
diff --git a/app/templates/book/components/sub_collection_tab_content.html b/app/templates/book/components/sub_collection_tab_content.html
index 62594e6..ff93ee5 100644
--- a/app/templates/book/components/sub_collection_tab_content.html
+++ b/app/templates/book/components/sub_collection_tab_content.html
@@ -32,12 +32,15 @@
     <div data="sub-collection-context-menu-{{sub_collection.id}}" id="dropdown" class="z-10 hidden bg-white divide-y divide-gray-800 border border-gray-800 dark:border-none dark:divide-gray-100 rounded-lg shadow w-44 dark:bg-gray-700">
       {% if current_user.is_authenticated %}
       <ul class="py-2 text-sm text-gray-700 dark:text-gray-200">
+        {% if sub_collection.is_leaf and not sub_collection.children %}
         <li>
           <button type="button" id="callAddSectionModal" data-modal-target="add-section-modal" data-modal-toggle="add-section-modal" data-collection-id="{{collection.id}}" data-sub-collection-id="{{sub_collection.id}}" class="w-full block px-4 py-2 hover:bg-gray-100 dark:hover:bg-gray-600 dark:hover:text-white"> New Section </button>
         </li>
+        {% else %}
         <li>
           <button type="button" id="callAddSubCollectionModal" data-modal-target="add-sub-collection-modal" data-modal-toggle="add-sub-collection-modal" data-collection-id="{{sub_collection.id}}" class="w-full block px-4 py-2 hover:bg-gray-100 dark:hover:bg-gray-600 dark:hover:text-white"> New Subcollection </button>
         </li>
+        {% endif %}
       </ul>
       <ul class="py-2 text-sm text-gray-700 dark:text-gray-200">
         <li>
diff --git a/app/templates/book/local_breadcrumbs_navigation.html b/app/templates/book/local_breadcrumbs_navigation.html
index 963a078..6bb5de9 100644
--- a/app/templates/book/local_breadcrumbs_navigation.html
+++ b/app/templates/book/local_breadcrumbs_navigation.html
@@ -1,26 +1,33 @@
 <!-- prettier-ignore -->
 <ol class="inline-flex items-center overflow-x-scroll md:overflow-auto p-0">
 {% for breadcrumb in local_breadcrumbs if breadcrumb.type != "MyBookList" and breadcrumb.type != "AuthorBookList" %}
-<li class="inline-flex items-center align-middle justify-center">
-    {% if not loop.index==local_breadcrumbs|length-1 %}
-    <a href="{{ breadcrumb.url }}" class="inline-flex text-xs font-medium text-gray-700 hover:text-blue-600 dark:text-gray-400 dark:hover:text-white" data-tooltip-target="breadcrumb-{{loop.index}}-tooltip" data-tooltip-placement="bottom">
-    {% else %}
-    <span class="inline-flex items-center text-sm font-medium text-gray-700 hover:text-blue-600 dark:text-gray-400 dark:hover:text-white" data-tooltip-target="breadcrumb-{{loop.index}}-tooltip" data-tooltip-placement="bottom">
-    {% endif %}
-    <div id="breadcrumb-{{loop.index}}-tooltip" role="tooltip" class="delay-100 absolute z-[100] invisible inline-block px-3 py-2 text-sm font-medium text-white transition-opacity duration-700 bg-gray-900 rounded-lg shadow-sm opacity-0 tooltip dark:bg-gray-700">
-    {{ breadcrumb.label }}
-    <div class="tooltip-arrow" data-popper-arrow></div>
-    </div>
-    <!-- prettier-ignore -->
-    <span class="select-none">{{ breadcrumb.label }}</span>
-    {% if not loop.index==local_breadcrumbs|length %}
-    </a>
-    {% else %}
-    </span>
-    {% endif %}
-    {% if not loop.index==local_breadcrumbs|length-1 %}
-    <svg aria-hidden="true" class="w-4 h-4 text-gray-400" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" d="M7.293 14.707a1 1 0 010-1.414L10.586 10 7.293 6.707a1 1 0 011.414-1.414l4 4a1 1 0 010 1.414l-4 4a1 1 0 01-1.414 0z" clip-rule="evenodd"></path> </svg>
-    {% endif %}
-</li>
+    <li class="inline-flex items-center align-middle justify-center">
+        {% if not loop.index==local_breadcrumbs|length-1 %}
+            <a href="{{ breadcrumb.url }}" class="inline-flex text-xs font-medium text-gray-700 hover:text-blue-600 dark:text-gray-400 dark:hover:text-white" data-tooltip-target="breadcrumb-{{loop.index}}-tooltip" data-tooltip-placement="bottom">
+        {% else %}
+            <span class="inline-flex items-center text-sm font-medium text-gray-700 hover:text-blue-600 dark:text-gray-400 dark:hover:text-white" data-tooltip-target="breadcrumb-{{loop.index}}-tooltip" data-tooltip-placement="bottom">
+        {% endif %}
+
+        {% if breadcrumb.type != "Splitter" %}
+        <div id="breadcrumb-{{loop.index}}-tooltip" role="tooltip" class="delay-100 absolute z-[100] invisible inline-block px-3 py-2 text-sm font-medium text-white transition-opacity duration-700 bg-gray-900 rounded-lg shadow-sm opacity-0 tooltip dark:bg-gray-700">
+            {{ breadcrumb.label }}
+            <div class="tooltip-arrow" data-popper-arrow></div>
+        </div>
+        {% endif %}
+
+        <!-- prettier-ignore -->
+        <span class="select-none">{{ breadcrumb.label }}</span>
+
+        {% if not loop.index==local_breadcrumbs|length %}
+            </a>
+        {% else %}
+            </span>
+        {% endif %}
+
+
+        {% if not loop.index==local_breadcrumbs|length-1 %}
+        <svg aria-hidden="true" class="w-4 h-4 text-gray-400" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"> <path fill-rule="evenodd" d="M7.293 14.707a1 1 0 010-1.414L10.586 10 7.293 6.707a1 1 0 011.414-1.414l4 4a1 1 0 010 1.414l-4 4a1 1 0 01-1.414 0z" clip-rule="evenodd"></path> </svg>
+        {% endif %}
+    </li>
 {% endfor %}
 </ol>
\ No newline at end of file
diff --git a/app/views/book/collection.py b/app/views/book/collection.py
index 2ff5f6d..9b64114 100644
--- a/app/views/book/collection.py
+++ b/app/views/book/collection.py
@@ -21,7 +21,7 @@ from .bp import bp
 @bp.route("/<int:book_id>/collections", methods=["GET"])
 def collection_view(book_id: int):
     book = db.session.get(m.Book, book_id)
-    breadcrumbs = create_breadcrumbs(book_id=book_id, collection_path=())
+    breadcrumbs = create_breadcrumbs(book_id=book_id)
     if not book or book.is_deleted:
         log(log.WARNING, "Book with id [%s] not found", book_id)
         flash("Book not found", "danger")
diff --git a/app/views/book/interpretation.py b/app/views/book/interpretation.py
index 4108f6d..9664a1f 100644
--- a/app/views/book/interpretation.py
+++ b/app/views/book/interpretation.py
@@ -38,20 +38,14 @@ def interpretation_view(
                 book_id=book_id,
             )
         )
-    # FIXME breadcrumbs
-    # breadcrumbs = create_breadcrumbs(
-    #     book_id=book_id,
-    #     collection_path=(
-    #         collection_id,
-    #         sub_collection_id,
-    #     ),
-    #     section_id=section_id,
-    # )
+    breadcrumbs = create_breadcrumbs(
+        book_id=book_id, section_id=section_id, collection_id=section.collection.id
+    )
     return render_template(
         "book/interpretation_view.html",
         book=book,
         section=section,
-        breadcrumbs=[],
+        breadcrumbs=breadcrumbs,
     )
 
 
@@ -191,20 +185,15 @@ def qa_view(book_id: int, interpretation_id: int):
         flash("Interpretation not found", "danger")
         return redirect(url_for("book.collection_view", book_id=book_id))
 
-    # FIXME
-    # breadcrumbs = create_breadcrumbs(
-    #     book_id=book_id,
-    #     collection_path=(
-    #         collection_id,
-    #         sub_collection_id,
-    #     ),
-    #     section_id=section_id,
-    #     interpretation_id=interpretation.id,
-    # )
+    breadcrumbs = create_breadcrumbs(
+        book_id=book_id,
+        collection_id=interpretation.section.collection.id,
+        section_id=interpretation.section.id,
+    )
     return render_template(
         "book/qa_view.html",
         book=book,
         section=interpretation.section,
         interpretation=interpretation,
-        breadcrumbs=[],
+        breadcrumbs=breadcrumbs,
     )
diff --git a/tests/test_book.py b/tests/test_book.py
index 197129c..5e7441d 100644
--- a/tests/test_book.py
+++ b/tests/test_book.py
@@ -458,7 +458,7 @@ def test_crud_subcollection(client: FlaskClient, runner: FlaskCliRunner):
         label="Test SubCollection #1 Label"
     ).first()
     assert sub_collection
-    assert sub_collection.is_leaf
+    assert not sub_collection.is_leaf
     assert sub_collection.parent_id == collection.id
 
     m.Collection(
diff --git a/tests/test_breadcrumbs.py b/tests/test_breadcrumbs.py
index 3dc4ca3..7fbb00b 100644
--- a/tests/test_breadcrumbs.py
+++ b/tests/test_breadcrumbs.py
@@ -6,13 +6,13 @@ from app import models as m, db
 def test_breadcrumbs(runner: FlaskCliRunner, app):
     runner.invoke(args=["db-populate"])
     with app.app_context(), app.test_request_context():
-        res = create_breadcrumbs(1, (1,), 1)
+        res = create_breadcrumbs(book_id=1, collection_id=1, section_id=1)
     assert len(res) == 4
     book: m.Book = db.session.get(m.Book, 1)
     assert book
     assert book.owner.username in res[0].label
     assert res[1].label == book.label
     with app.app_context(), app.test_request_context():
-        res = create_breadcrumbs(1, (), 1)
+        res = create_breadcrumbs(book_id=1, section_id=1)
     assert res
-    assert len(res) == 2
+    assert len(res) == 4