Gas flask sampling at West Astringent Creek, Yellowstone. Open tube...

Gas flask sampling at West Astringent Creek, Yellowstone. Open tube...

Detailed Description

Gas flask sampling at West Astringent Creek, Yellowstone. Open tube with attached gas chamber inserted into ground, gas travels through tube into vacuum flask being held by scientist.

Details

Image Dimensions: 2560 x 1920

Date Taken: