Montana - Big Sky Country; the Treasure State

Pompeys Pillar National Monument
Pompeys Pillar National Monument
Pompeys Pillar National Monument encompasses 51 acres on the banks of the Yellowstone River and features a massive sandstone outcrop rising 120 feet high toward Montana's Big Sky. Hundreds of prehistoric and historic markings, petroglyphs, and inscriptions have transformed this geologic phenomenon into a living journal of the American West.
Swap-Bot: USA National Park PC 2
Postmarked: Albuquerque, New Mexico; January 2025

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Lake McDonald
LAKE McDONALD'S shimmering surface provides a mirror reflection of the prominent snowcapped peaks of Mt. Stanton and Mt. Vaught. The crystal clear lake displays a kaleidoscope of colorful stones comprising the lake bottom.
From my dad: August 1996