diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index ed79477d..ba77abce 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -4,19 +4,22 @@
 version: 2
 
 build:
-  os: ubuntu-20.04
+  os: "ubuntu-20.04"
   tools:
-    python: "3.10"
+    # https://docs.readthedocs.io/en/stable/config-file/v2.html#build-tools-python
+    python: "mambaforge-22.9"
 
 sphinx:
-  configuration: doc/conf.py
+  configuration: "doc/conf.py"
   # There doesn't seem to be a way to turn on nitpicky mode.
   # This is equivalent to `-W --keep-going`.
   fail_on_warning: True
 
 formats:
-  - pdf
+  - "pdf"
 
-python:
-  install:
-    - requirements: doc/requirements.txt
+# The build will run in an isolated `conda` environment; the version of Python
+# is determined by the environment specification file.
+#     https://docs.readthedocs.io/en/stable/guides/conda.html
+conda:
+  environment: "doc/environment.yml"
diff --git a/doc/citing.md b/doc/citing.md
index 6b49a001..07250fd3 100644
--- a/doc/citing.md
+++ b/doc/citing.md
@@ -18,12 +18,14 @@ is furnished to do so, subject to the following conditions: The above copyright
 permission notice shall be included in all copies or substantial portions of the Software.
 
 Users should note that published works produced using QGreenland are required to cite
-each dataset used in the work. QGreenland provides all dataset citation information in each
-layer’s metadata in QGIS (see the Layer Properties section in the Interacting with Geospatial 
-Data tutorial for instructions on how to access a layer’s metadata) and in the layer catalog
-provided with the QGreenland download package, **layer_list.csv**. You are also required to 
+each dataset used in the work. QGreenland provides all dataset citation information in
+each layer’s metadata in QGIS (see the [Layer Properties section in the Interacting with
+Geospatial Data tutorial](#interacting-with-geospatial-data-layer-properties) for
+instructions on how to access a layer’s metadata) and in the layer catalog provided with
+the QGreenland download package, **layer_list.csv**. You are also required to
 acknowledge or cite QGreenland and the National Snow and Ice Data Center in your work.
 
+
 ## Citation
 
 Please note that QGreenland currently has two citable components:
diff --git a/doc/contributor/how-to/write-documentation.md b/doc/contributor/how-to/write-documentation.md
index 6ea0bd6d..eec96b04 100644
--- a/doc/contributor/how-to/write-documentation.md
+++ b/doc/contributor/how-to/write-documentation.md
@@ -79,8 +79,8 @@ Sphinx or MkDocs under the hood, and we chose Sphinx. It runs automatically in
 response to changes in GitHub. It is configured by `.readthedocs.yml` at the
 root of this repository.
 
-When Read the Docs builds our documentation, it uses the Python environment
-defined by `doc/requirements.txt`.
+When Read the Docs builds our documentation, it uses the environment defined by
+`doc/environment.yml`.
 
 
 ### reStructuredText
diff --git a/doc/environment.yml b/doc/environment.yml
new file mode 100644
index 00000000..021fc8d2
--- /dev/null
+++ b/doc/environment.yml
@@ -0,0 +1,25 @@
+# For use by ReadTheDocs build system
+name: qgreenland-docs
+channels:
+  - conda-forge
+  - nodefaults
+dependencies:
+  # TODO: Upgrade sphinx ones sphinx-rtd-theme supports 7
+  # - sphinx ~=7.2.2
+  - sphinx ~=6.2.1
+  - latexmk ~=4.55
+  - myst-parser ~=2.0.0
+  - sphinx-click ~=3.0.1
+  - sphinx-rtd-theme ~=1.2.2
+  - autodoc-pydantic ~=1.9.0
+  - pydantic <2.0.0a0
+
+  # What is this? Do we need it?
+  # sphinx-autodoc-typehints==1.12.0
+
+  # QGreenland's dependencies for autodoc. Should we mock these instead?
+  - anytree ~=2.8.0
+  - funcy ~=1.16
+
+  - pip:
+    - sphinx-selective-exclude ~=1.0.3
diff --git a/doc/requirements.txt b/doc/requirements.txt
deleted file mode 100644
index 139c0237..00000000
--- a/doc/requirements.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-# Only for use by ReadTheDocs build system
-myst-parser==0.15.2
-autodoc-pydantic ~=1.5.1
-pydantic <2.0.0a0
-sphinx-click==3.0.1
-sphinx-selective-exclude ~=1.0.3
-
-# What is this? Do we need it?
-# sphinx-autodoc-typehints==1.12.0
-
-# QGreenland's dependencies for autodoc. Should we mock these instead?
-anytree==2.8.0
-funcy==1.16
diff --git a/doc/user/tutorials/interacting-with-geospatial-data.md b/doc/user/tutorials/interacting-with-geospatial-data.md
index adbd9d85..84ace766 100644
--- a/doc/user/tutorials/interacting-with-geospatial-data.md
+++ b/doc/user/tutorials/interacting-with-geospatial-data.md
@@ -44,6 +44,8 @@ as geospatial metadata and overviews/tile pyramids.
 Fig. 5: Example of a **Raster** data layer in QGreenland, ice sheet velocity, where
 each grid cell in the raster is 500 m x 500 m and is color-coded by a velocity
 
+
+(interacting-with-geospatial-data-layer-properties)=
 ## Layer Properties
 
 Right clicking on a data layer in the **Layers Panel** and selecting ‘Properties’, or simply double