Skylight, Kilauea Volcano by Konabish ~ Greg Bishop on Flickr.
Brughiera vulcanica by Massimo1989 on Flickr.
Kahaualea, Big Island. by Walkabout Kid on Flickr.
DSC_6997_mod by davidecastiglione94 on Flickr.
untitled by The Red Head Explorer on Flickr.
outdoormagic:

Arenal Volcano, Costa Rica by nickcockcroft on Flickr.
5352 Pu’u ‘O’o double skylight by Adam Knight Photography on Flickr.
Every Breath You Take by Massimo1989 on Flickr.