An Geologist uses a handheld GPS unit to mark the flow margin coord...

An HVO geologist uses a handheld GPS unit to mark the flow margin c...

Detailed Description

An HVO geologist uses a handheld GPS unit to mark the flow margin coordinates. The flow field map today was updated by taking a series of GPS points like this around the leading portion of the flow.

Details

Image Dimensions: 4320 x 3240

Date Taken: