Also not a spam bot, but I'll shamelessly add my website to the Maps and Routefinding Category:

www.SlopeAngleMaps.com

I make slope angle overlays for Google Earth, for any region you want.

I offer an excellent tool for estimating slope angle in Google Earth - slope angle overlays. The overlays will pick out terrain features down to 30x30ft. This is no substitute for measuring slopes...

For the continental US, the data resolution is about 10 meters. So I calculate the slope angle for every elevation point using the surrounding points in a finite difference.

This means there is a...

Based on input from users, I added an option for a second color scheme. This one is much more colorful and allows you to pick out any angle you want easily. See:...

Thanks for the input.

The color scale is a tough question. Strictly speaking, the more colors you can pick out, the more information you have about the slope. On the other hand, the overlays get...

I've been wondering the same thing for years, so I finally got around to making GE overlays. Go to my website:
www.slopeanglemaps.com
You can order color coded slope angle overlays for any...

For years I've wanted a color-coded slope angle overlay for Google Earth to help me plan my various ski adventures in the backcountry, but no such layers seemed to be available anywhere. Finally, I...