Entry No. 29 — the Bozeman file — filed under: outdoor-weird

Ringing Rocks

A jumbled pile of ordinary-looking boulders at the edge of the Boulder Batholith that chime like bells when you tap them with a hammer or wrench. It's one of only a handful of such acoustic rock fields on Earth, and the cause is still not fully explained by geologists. The strangest part: pry a singing boulder loose from the pile and it goes dead silent. Visitors leave hammers tucked in the rocks for the next person.

The move: Bring your own hammers, drive the gravel road out, and spend an afternoon playing percussion on a hillside of rocks that ring like a xylophone.

📍 Before you go Last few miles are rough gravel best for high-clearance vehicles; bring your own hammer or crescent wrench to make the rocks ring.

• 📍 Whitehall
• 💸 Free
• ⚡ Up for anything
• 🌗 Outdoors

Where: Off Pipestone Exit 241, I-90, ~18 miles east of Butte, MT

Hours: Added 2026-06-24 — confirm current hours before you go.

Plan a visit & invite your people →

Proof: source 1 · source 2 · source 3 · source 4

last checked: 2026-06-24