Bill Houghton, Sebastopol, CA
>"...the fisherman sits in a dark house on a frozen lake or river..." (from Dave's link).

So, not just dark but cold too - and probably unheated, since most heat sources emit light as a byproduct and there's darn few GFCI outlets on the average frozen lake for radiant heaters.

The willingness of human beings to suffer for fun is boundless.

Bill, who lives in a state where people regularly spend entire weekends on a cliff face, sleeping like bats in rain and snow, in order to say "I climbed the North Face of [mountain]."