interesting pattern of fissures formed in a lava rock, hvaleyri beach, hafnafjordur, iceland.

beach concept conceptual crevice earth eruption firm fissures formation foundation fractured geology grey ground hafnafjordur hvaleyri iceland icelandic land lava minerals mountain nature pattern people pyroclastic reykjavik rock round sediment shapes solid still stone strength stress support surface tephra texture tuff volcanics volcano vulcanic