A skylight in the master lava tube
![photo of lava](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/20020531-101-0211_RPH_large.jpg?itok=9DxXwCGV)
Detailed Description
A skylight in the master lava tube high in the Mother's Day flow, several hundred meters from the vent. The skylight is several meters across. The tube is nearly full.
Sources/Usage
Public Domain.