channelized lava flow forming tube
![A channelized flow of lava forming a tube](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/980806_L.jpg?itok=cmzkiSQI)
Detailed Description
August 6, 1998 Two weeks later, the same channelized flow has formed a tube. A series of skylights in the roof of the tube forms a chain of orange beads on Pulama pali.
Sources/Usage
Public Domain.