Thor’s Hammer

Thor’s Hammer is a tall, cap-topped hoodoo below Sunset Point in Bryce Amphitheater. Its narrow orange column and broad cap stand out among the spires, and it’s one of the park’s most famous formations. You can pick it out from the rim or go below the edge for a closer look.

From Sunset Point, frame the hoodoo with some of the amphitheater around it; the surrounding rock gives the formation scale. For changing, closer angles, take Navajo Loop toward Two Bridges, which is the best trail-side view. The full Navajo Loop is a moderate 1.3-mile loop with 515 feet of elevation gain; allow about one to two hours.

Two Bridges stays open year-round. Wall Street closes in winter, so the full loop is seasonal; when that section is closed, Two Bridges is an out-and-back. The trail starts at Sunset Point, where there’s parking, a public restroom, drinking-water refill and a picnic table. The rim viewpoint is accessible; the closer view is down the Navajo Loop switchbacks.

The hammer profile comes from layers in the Claron Formation wearing away at different rates. Softer sandstone and siltstone erode faster than harder rock, leaving the narrow pedestal beneath its wider cap. It’s the same process that creates Bryce’s crowded towers and spires, concentrated into one easy shape to read.

The rocks in Bryce Amphitheater began as sediment in an ancient lake and floodplain system about 50 million years ago. Streams carried material from the western highlands into the basin, where it settled and hardened into limestone, dolostone, mudstone, siltstone and sandstone.

Rain and ice are still reshaping the hoodoos. Water seeps into cracks, freezes and expands, helping break the rock apart. Bryce has more than 170 nights a year when temperatures cross from above freezing to below freezing, giving that process plenty of chances to work.

The vivid lower cliffs around Sunset Point are part of the Claron Formation’s Pink Member. Iron oxides make much of the rock red and yellow, while manganese oxides create pink and purple patches. The whiter upper member has fewer mineral impurities, so the amphitheater’s color bands are part of the geology, not just the light.