Entry No. 21 — the Butte file — filed under: roadside-oddity

Ringing Rocks

A jumbled pile of boulders on the edge of the Boulder Batholith that chime like bells when struck. A rack of hammers and mallets sits at the field so you can try yourself; only about one in three rocks actually rings, and oddly, if a ringing boulder is removed from the pile it stops ringing entirely. The acoustic phenomenon still has no fully settled scientific explanation. The last few miles are rough gravel best for high-clearance vehicles.

The move: Pack a picnic, drive the gravel road out, and take turns hammering boulders to find which ones ring.

📍 Before you go Last ~3.5 mi is rough gravel; high-clearance/AWD recommended. No fee, no facilities.

• 📍 Pipestone (near Whitehall), MT
• 💸 Free
• ⚡ Up for anything
• 🌗 Outdoors

Where: Off I-90 Exit 241 (Pipestone), ~3.5 mi north on gravel roads, Pipestone, 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