Falling into a hidden crevasse that is covered by a weak snow bridge is thus a danger for mountaineering.

The detection of hidden crevasses requires care and experience.

After a little clambering the captain, who was in a very exhausted state, fell through a hidden crevasse, fracturing his skull sixty feet below.

Testing it with an ice ax, we found that one solid-seeming surface turned out to be a frozen layer the thickness of paper covering a hidden near-bottomless crevasse.

In winter, the pavements become miniature glaciers with hidden crevasses!

Likewise on glaciers, tight ropes should prevent anybody from ever dropping much more than waist deep into a hidden crevasse - a position from which the victim can usually be dragged out.

Over the next few days the party struggled to ascend the inland ice over a treacherous surface with many hidden crevasses.

He crouched with both hands on the bottom until he was sitting in the water with his legs dangling over the hidden crevasse, and let himself slip down.

They pushed on into the tangled ice maze of the glacier and Forester was deathly afraid of hidden crevasses.

The house's mind shot down the sled trail again, searching once more for a poorly banked turn, a hidden crevasse, a dangerous ice patch.