The holts are nearly always close to the sea

in fallen boulders, old ruins, and cliffs

all at the top of a stack, like this... High above the

sea.. a safe place for cubs. I wait, tense then disappointed.

She leaves her spraint to notify others of her visit. The holts

are evenly spaced about 500 yards apart, enough for the use of any otter
who passes by, with or without cubs
An Eagle In Your Mind - Boards of Canada