From the first it had been a squeeze to get in through the entrance-crevice.

This had had its advantages, however.

It had prevented the larger Folk from taking our cave away from us.

And it was a most desirable cave, the highest on the bluff, the safest, and in winter the smallest and warmest.
To show the stage of the mental development of the Folk, I may state that it would have been a simple thing for some of them to have driven us out and enlarged the crevice-opening.

But they never thought of it.