Boars Tusk, Rock Springs

3.7
#8 of 8 in Things to do in Rock Springs
Geologic Formation · Hidden Gem · Landmark
Boars Tusk is an isolated remains of a volcano within the Rock Springs Uplift in the Green River Basin of southwestern Wyoming. It has a peak elevation of 7,101 ft (2,164 m) and rises some 400 ft (120 m) above the surrounding Killpecker Creek plain and lies 26.2 mi (42.2 km) north of Rock Springs. The north end of White Mountain lies 3.0 mi (4.8 km) to the west.
Boars Tusk is an isolated remnant of a long extinct volcano associated with the Leucite Hills to the east. Heavily eroded, all that remains of the volcano is part of the erosion resistant volcanic neck which is composed of the uncommon volcanic rock lamproite. Rock samples from Boars Tusk provided an age of 2.5 MA.
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Boars Tusk reviews

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TripAdvisor traveler rating 3.5
23 reviews
Google
4.6
TripAdvisor
  • A very good explanation of erosion. I believe this is the lava from inside long ago volcano. The soil erosion over the thousand of years has left only this volcanic core. It’s out in the middle of...  more »
  • This is a very cool sight to see. However, it's a long way off the beaten path on a bumpy, dirt road. I'm not sure what we would have done if we had met with a car coming the other direction. This...  more »
Google
  • Amazing land feature, but would it kill anyone to run a road grader on the road once in a while? Only go if your vehicle has high clearance!
  • You need ground clearance to travel the access road. Alas, our European sedan was too low for the ruts. But, it's a beautiful drive nonetheless!

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