Key takeaways
- A picket is an aluminum stake (~2–3 ft) used as a snow anchor.
- It's driven into firm snow at an angle, or buried horizontally as a 'deadman' in softer snow.
- Uses: glacier travel, crevasse rescue, belaying, and rappelling on snow.
- Holding power depends on snow conditions and placement method — match the technique to the snow.
This is general educational information, not instruction. Snow anchors are life-critical and condition-dependent — learn them hands-on with qualified instruction.
What a picket is
A picket is an aluminum stake (typically 2–3 feet long) used as a snow anchor — carried for building anchors during glacier travel, crevasse rescue, belaying, and rappelling on snow, where there’s no rock or ice to anchor to.
How it’s placed
- Driven: in firm, hard snow, hammered into the slope at an angle leaning slightly back from the load, clip-in point near the surface.
- Buried (‘deadman’): in softer snow, laid horizontally in a trench perpendicular to the load with a sling around its middle — far more holding power in soft snow than a driven placement.
Setting an anchor on a soft snow slope, a mountaineer realizes a driven picket would pull straight out — so they dig a trench and bury it horizontally as a deadman, clipping the sling at the surface, for a far stronger hold.
How reliable they are
Holding power varies enormously with snow conditions and placement. A well-driven picket in hard snow or a buried deadman in consolidated snow can be strong; in weak, sugary snow, pickets can pull out. Mountaineers assess the snow, choose the right method, sometimes equalize multiple pickets, and back up critical anchors. A picket is essentially a sturdier, purpose-built snow stake — gear plus judgment.
The bottom line
A picket is an aluminum stake used as a snow anchor — driven into firm snow at an angle, or buried horizontally as a 'deadman' in softer snow, for glacier travel, crevasse rescue, and belaying. Its holding power swings widely with snow conditions, so matching the placement method to the snow (and backing up critical anchors) is the key skill. Gear plus judgment, not gear alone.
Frequently asked questions
What is a picket in mountaineering?
A picket is an aluminum stake, typically around 2 to 3 feet long, used to create an anchor in snow. It's a piece of mountaineering hardware carried for building snow anchors during glacier travel, crevasse rescue, belaying, and rappelling on snow slopes, where there's no rock or ice to anchor to.
How is a picket placed?
Two main ways, depending on snow. In firm, hard snow, it's driven (hammered) into the slope at an angle leaning slightly back from the load, with the clip-in point near the snow surface. In softer snow, it's buried horizontally — laid in a trench perpendicular to the load with a sling around its middle — as a 'deadman' or 'horizontal picket,' which has much greater holding power in soft snow than a driven placement. Picking the right method for the snow is essential.
How reliable are picket anchors?
Their holding power varies enormously with snow conditions and placement. A well-driven picket in hard snow or a properly buried deadman in consolidated snow can be strong, but in weak, sugary, or unconsolidated snow, pickets can pull out under load. Because of this variability, mountaineers assess the snow, choose the appropriate placement, sometimes equalize multiple pickets, and back up critical anchors. Snow anchoring is a skill that relies on judgment, not just gear.
Sources
- Snow anchors — American Alpine Club
- Mountaineering: The Freedom of the Hills — The Mountaineers