When creating a new project in ArcGIS Pro, the default basemap may be removed to simulate the experience of ArcMap or ArcScene.
When any basemap is turned off in a scene, what remains is a 'grey globe', called the elevation surface, which is like a blank basemap. However, the elevation surface may block some features and prevent analysis.
Features may be blocked by the elevation surface in a 3D scene because those features contain negative elevations.
At this time, ArcGIS Pro does not function like ArcScene, where the features underneath the surface are visible by default.
To view blocked features, use the following procedures until the desired effect is achieved.
Switch the view from 'Global' to 'Local'
Local view is used for smaller extent content in a projected coordinate system, or cases where the curvature of the Earth is not necessary.
Allow below-ground navigation
Remove the elevation source (ground surface)
On the Contents pane, right-click the elevation source and click Remove to delete it. The feature is now visible.