Depthfields.com is a new, free, resource site for heightmaps. Everyone can submit or download heightmaps there. Inspired from personal need for free heightmaps quickly and without a hassle.
For anyone interested in submitting their own heightmaps, Depthfields is holding a raffle on Oct 1st where one lucky submitter wins 100€ worth of Steam Keys.
Every approved submission counts as one raffle ticket so the more you submit, the better your chances to win. The deadline to submit is September 30th.