Aniakchak Caldera, Alaska Peninsula. The caldera formed about 3400 years ago. Aniakchak is one of the most active volcanoes on the Alaska Peninsula.
Ron. You are the winner of WOGE#77.I actually have this image as a desktop background I liked it so much.I look forward to 78.
WoGE #78 is posted. No Schott Rule waiting period on this one, so get to it!