Thursday, July 31, 2014
Lava River Cave
After visiting Lava Butte at Lava Lands south of Bend Oregon, we headed for nearby Lava River Caves. These caves resulted from lava flows in the Newberry Volcano complex which includes cinder cones like Lava Butte. The youngest lava flows in the area date to about 7000 years ago (not long after Crater Lake formed from Mount Mazama about 7700 years ago). This lava cave is about a mile long and it is well visited, including a ranger guided tour of most of its length.
The entrance to the cave sits in a depression that is maybe 200 meters long with entrances at both ends and the area in the middle is a collapsed section of the cave that is overgrown with plants taking advantage of the relatively damp and cool environment compared to the surrounding landscape. This image was taken with my 18-250mm Sigma lens at 18mm focal length with an exposure of 1/40 seconds at f/5.6, ISO 400.