Northern Rocky Mountain GrottoMontana & Wyoming · NSS

Bighorn/Horsethief Survey - Week-Long Summer Project

Sunday 9 August 2026

Armpit, Wyoming Armpit, Wyoming

Cave Trip

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The big one. Full week of surveying in Bighorn Cavern and Horsethief Cave, camped at the Armpit. Week-long format is the best training runway we have - new cavers get real time underground with experienced leaders, and survey teams get to push leads that are too far back for a weekend trip. Steve Zeman (PESH veteran) is cooking again. Come for the whole week or any part of it. Sign up on the project Google Group ([email protected]) - we'll coordinate camp logistics, transport, and team assignments there.

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