Balanced Rock, Idaho: Location in Castle Rocks State Park

Finding Idaho's Gravity-Defying Formation

Balanced Rock is located in Castle Rocks State Park near Almo, Idaho.

Precise Location

• Park: Castle Rocks State Park (IDPR)
• Nearest town: Almo (Cassia County)
• Regional context: 20 mi south of Burley; 45 mi north of Twin Falls
• Reference point: ~1.2 miles NW of Pomerelle Summit (highest point on I-84 in Idaho)
• Coordinates: ~42.15°N, 113.60°W (approx.)

Access

• From I-84: Exit 216 (Declo/Almo), follow signs to Castle Rocks
• Park entry fee required ($5/vehicle Idaho residents, $10 non-residents)
• Trail to Balanced Rock: Moderate 1–2 mile hike from trailhead

Geological Note

Balanced Rock is a hoodoo—eroded rhyolite tuff formation where a resistant caprock protects softer underlying material. Part of the 2.5-million-year-old Cassia Mountains volcanic field.