Tower Rock: William Clark's "Clift"

Tower Rock: William Clark's "Clift" (HM22LB)

Location: Carmen, ID 83462 Lemhi County
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Country: United States of America
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N 45° 18.69', W 113° 54.396'

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Sixty million years ago, you wouldn't have recognized this place. There were no high mountains, no deep canyons. Streams meandered through a landscape of broad valleys and low hills that may have resembled Kentucky's Cumberland Valley.
The rocks, gravel, sand, clay and silt that eroded from the hills into streams accumulated and were cemented into layers, coarse conglomerate and sandstone you can see in the face of Tower Rock across the highway.
Clark's "dark brown flint" is actually Precambrian quartzite, some of the oldest rock in Idaho. It can be seen better at outcrops between here and North Fork.

This clift is of a reddish brown colour the rocks which fall from it is a dark brown flint tinged with that Colour. Some Gullies of white Sand Stone and sand fine & as white as snow." - William Clark, August 21, 1805
HM NumberHM22LB
Series This marker is part of the Lewis & Clark Expedition series
Placed ByBureau of Land Management
Marker ConditionNo reports yet
Date Added Monday, November 6th, 2017 at 1:02pm PST -08:00
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Locationbig map
UTM (WGS84 Datum)12T E 272161 N 5021665
Decimal Degrees45.31150000, -113.90660000
Degrees and Decimal MinutesN 45° 18.69', W 113° 54.396'
Degrees, Minutes and Seconds45° 18' 41.4" N, 113° 54' 23.76" W
Driving DirectionsGoogle Maps
Area Code(s)208
Which side of the road?Marker is on the right when traveling South
Closest Postal AddressAt or near 848-920 US-93, Carmen ID 83462, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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