Although the narrow ridges made the ramp's surface uneven, the coating of algae was like grease, giving him no purchase.

Rings allow for easy mating but ridges make it difficult to pull the components apart.

Now, all along the sculpted, lacelike ridge, shadows made a thousand frozen forms.

The two wooded ridges that define The Trough make it inaccessible from either side.

Especially the many ridges and plentiful lakes made a permanent impression on many a man.

The ridge made a kind of cape extending into the ice, and beyond it was a bay.

Probably the ridge that formed the headland ran out into the ocean, only at a lower level, and made the reef also.

Now just past it- the half-circle, almost, that ridge makes?

As he climbed a ridge of ice, made easier by the steps chopped into it, the drift station came into view.

The lumps and ridges in this field make a sort of cross in double lines with a circular thing in the middle.