1.   A new Skywalk sole with an environmentally-friendly cleat pattern gives a good grip even on slippery rocks.

2.   These boots give a good grip, even on slippery rocks.

3.   They clambered over the slippery rocks.

4.   He scrabbled at the slippery rock.

5.   A soft, warm rain set in that afternoon as we started the difficult descent through the slippery rock rubble to the foot of Batu Lagu.

6.   He clearly and patiently explains park biology while surefootedly traversing muddy slopes and slippery rocks.

7.   I took it through some wet, rough tracks used largely by all-terrain vehicles, complete with deep ruts, fallen logs and slippery rocks.

8.   Purple-and-green crabs skittered across the slippery rocks blithely, but this was their back yard, their toeholds instinctive.

9.   The tourists watched as one member of the family scampered down the slippery rocks to fill a plastic bottle with water to bring home as a memorial.

10.   To get a closer look, we climbed down onto the slippery rocks being lapped by the Hudson above the George Washington Bridge.