Clues to a Volcanic Past

Clues to a Volcanic Past (HM17S8)

Location: Prineville, OR 97754 Crook County
Country: United States of America

N 44° 25.025', W 120° 37.121'

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Stein's Pillar, 350 feet high and 120 feet wide, is a modern day clue to this area's ancient past.

Around forty-four million years ago, avalanches of hot ash, pumice and volcanic dust flowing from local volcanic centers filled this ancient valley. A long period of erosion followed.

These flows are still visible in the layers of Stein's Pillar. Finally, Mother Nature patiently sculpted the landscape you see today. Rain, wind and frost slowly chiseled along cracks in the rocks, forming the valley and leaving Stein's Pillar as a beacon to travelers.

Major Enoch Steen explored this area in the 1860's. His name was misspelled so often that the incorrect version became official. The pillar had aided travelers and enticed geologists for many years. The diagram may help you imagine the remaining layers of volcanic deposits that provide clues to this area's past.
HM NumberHM17S8
Placed ByUnited States Forest Service
Marker ConditionNo reports yet
Date Added Thursday, September 4th, 2014 at 6:26am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)10T E 689578 N 4920957
Decimal Degrees44.41708333, -120.61868333
Degrees and Decimal MinutesN 44° 25.025', W 120° 37.121'
Degrees, Minutes and Seconds44° 25' 1.50" N, 120° 37' 7.26" W
Driving DirectionsGoogle Maps
Area Code(s)541
Closest Postal AddressAt or near 13000 Mill Creek Rd, Prineville OR 97754, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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