From T.S Eliot poem:
Paint me a cavernous waste shore
Cast in the unstilled Cyclades,
Paint me the bold anfractuous rocks
Faced by the snarled and yelping seas.

I'd be interested to hear opinions as to appropriateness of this word,
considering dictionary definition:
anfractuous .
5LL(Ec) anfractuosus < L anfractus, pp. of anfringere < an3 (for ambi3), around + frangere, BREAK6 full of twists, turns, and windings; roundabout; tortuous

My point is, the path among the rocks may have been anfractuous, but the rocks werem't.