14 October 2005 - 1150
![This is a photo of a small skylight, from which a thin lava flow welled and then drained back underground.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/1150.jpg?itok=6rkYy2f_)
Detailed Description
Small skylight, from which a thin lava flow welled and then drained back underground. The curved wrinkles on the crust at far end of skylight formed during drainback, when the crust was hot and pliable. 1150.
Sources/Usage
Public Domain.