DAE have the urge to find the two nearest accessible high points with the greatest line-of-sight distance between them?

You know, for testing your radios, antennas, and stuff?

Radio Mobile has a decent peak finder, but I'm wondering if a web app or mobile app exists for finding such points.

Also, any STL hams want to help out?

Edit: www.heywhatsthat.com is perfect. It has a selection to find the highest point within several distances and plots a line-of-sight map.