An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
The western branch of the coastal plain flow field is inflated and more active than the eastern branch. Here, a breakout from a tumulus feeds a ropey pahoehoe flow. The fume in the background on the pali marks the lava flow activity that is feeding the coastal breakouts.