With this display style for viewing data in a plan view, you can easily see where in the model there are interpreted soil and rock. By setting a scale on the desired property, this appears very clearly in a plan view.
With this view as a basis, one can in turn create external boundaries for models on the selected property. Together with the maximum side length for triangles setting for a model, this can provide a nicer edge on the modeled area - without long triangular sides.