Interesting cover to this month's GEOLOGY Magazine.

ON THE COVER:
Cover: Fumarole tower on the upper (>3000 m above sea level) flanks of Mount Erebus volcano, Antarctica. These towers form above natural hot vents and because of the continuous subzero temperatures the hot steam immediately turns to ice. Hot steam can be seen coming out of the chimney. Summer and winter temperatures average -25 and -50 °C, respectively. Towers eventually become unstable and collapse. See "Isostatic rebound due to glacial erosion within the Transantarctic Mountains," by Stern et al., p. 221-224. Photo by: Tim Stern. Cover design by: Margo Y. Sajban.

I think that's pretty cool all on its own. But it just so happens I've been watching this site for awhile cause it's amusing as hell to watch some people's hobbies. Be sure to go back to the beginning.

This tower is 151 feet high and still growing.