Why not?
We can climb it." "Oh yes, I can get up there; but it isn't very good for the boots." Good or bad, Vince did not hesitate, but, lanthorn in hand, commenced the ascent by climbing right in the narrow part of the rift, where each foot became wedged between the sides of the opening, and had to be dragged out again as the next foot was brought over and placed in front.
"Awkward travelling," said Vince; "but you can't slip." "Begin to feel as if I can," replied Mike--"right out of my shoes.

I say, it is awkward." The distance they had to traverse here, however, was but short, and the next angle showed that the fault was at a much easier slope, while the opening was wider, so that they got along more pleasantly.

But at the end of another twenty yards the walls began to close in, and the place looked so uninviting that Mike stopped.

"Hadn't we better go back ?" he said.

"What for ?" replied Vince.