Scilly is a mere rock rising from the sea to the west of Bryher, it is flat and cleft in two by a deep chasm through which the water runs.
"Cornwall"
G. E. Mitton
Yet the chasm below is so sheer and stern that no one can climb up the sides.
"Cornwall"
G. E. Mitton
Hubert flung himself across the chasm, refusing doggedly to see it, and found himself, flushed and excited, in the little field beyond.
"Helena Brett's Career"
Desmond Coke