1
The floor of the cave was of very fine shingle intermixed with sand.
2
The Commandant followed, his feet at every step sinking ankle-deep in the fine shingle.
3
Just before Christmas I found myself digging into the fine shingle of a beach opposite Bass Rock, near Edinburgh, in the pouring rain.
4
After a moment or two he got on his feet and made his way back across a yard of fine shingle to the sand itself.