Well you still need to zoom in as the topography “resolution” or detail is linked to how close you are to the ground. This is as close as it lets you get:
You can use the “Add more Imagery” feature to tile your terrain to make a bigger area.
The other problem is that the terrain is more detailed but still “triangulated”…which results jagged and unrealistic contours.
I used Artisan (paid extension) to subdivide and smooth the terrain to add more detail.
Then I used @TIG
’s Contours extension
to generate contours (shown here at 5 foot intervals) - which looks a lot smoother.
Here’s the terrain model for you tp play around with if you want.