An Exploded Bay (#1)
Posted by: 
Volcanoguy
N 44° 26.447 W 110° 34.327
12T E 534050 N 4920920
A geological history sign along the Grand Loop Road near West Thumb.
Waymark Code: WMDPEC
Location: Wyoming, United States
Date Posted: 02/10/2012
Views: 20
“West Thumb’s shoreline has suspiciously crater-like contours. Its underwater profile is dramatically deeper than the rest of Yellowstone Lake. Only a massive explosion could have formed West Thumb.
Though the blowout occurred 125,000 years ago, West Thumb is still thermally active. Hot springs, mudpots, and geysers steam and percolate along the shore, and temperature gauges record high heat flow in lake bottom sediments.”
Marker Name: An Exploded Bay
Marker Type: Rural Roadside
Addtional Information:
Group Responsible for Placement: National Park Service
Date Dedicated: Not listed
Marker Number: Not listed
Web link(s) for additional information: Not listed
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Visit Instructions:
Please post a photo of you OR your GPS at the marker location. Also if you know of any additional links not already mentioned about this bit of Wyoming history please include that in your log.