Echo Amphitheater = Highway #84 = New Mexico.

About 40 miles South of Chama, New Mexico. Well worth the short hike to hear your echo. From My To Do Folder.
https://www.youtube.com/watch?v=64KBsx2pNLo
https://www.youtube.com/watch?v=64KBsx2pNLo
A Place for Those Born Too Late...
http://coloradonewmexicosteamtrain.org/FriendsForum/
http://coloradonewmexicosteamtrain.org/FriendsForum/viewtopic.php?f=116&t=5310