Red Rock Pass #171
N 42° 21.262 W 112° 02.968
12T E 413568 N 4689656
Quick Description: This interesting history plaque is located on Highway 91.
Location: Idaho, United States
Date Posted: 6/19/2011 7:08:57 AM
Waymark Code: WMBT45
Published By: Groundspeak Premium Member IDIFers
Views: 6

Long Description:
The Idaho history plaque reads:

RED ROCK PASS

YOU ARE STANDING IN THE OUTLET OF ANCIENT LAKE BONNEVILLE. A VAST PREHISTORIC INLAND SEA, OF WHICH SALT LAKE IS A MODERN REMNANT.

Covering over 20,000 square miles when it overflowed here about 14,500 years ago, its winding shoreline would have stretched from here to New Orleans if it were straightened out. This pass was deepened considerably when Lake Bonneville began to flow into Snake River. For a time, a torrent several times larger than the Amazon was discharged here. Finally, with a hotter, drier climate that slowly emerged about 8,000 years ago, Lake Bonneville gradually disappeared.
Marker Name: Red Rock Pass

Marker Type: Roadside

Marker Text:
See long description


County: Franklin

City: Preston

Group Responsible for Placement: Utah Pioneer Trails and Landmarks Association

Marker Number: 171

Date Dedicated: Not listed

Web link(s) for additional information: Not listed

Visit Instructions:
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Recent Visits/Logs:
Date Logged Log User Rating  
HM63 visited Red Rock Pass #171 4/17/2013 HM63 visited it
n2life visited Red Rock Pass #171 8/12/2011 n2life visited it
Mom the Cook & cashnhubby visited Red Rock Pass #171 6/17/2011 Mom the Cook & cashnhubby visited it

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