WOTD 2: Dettifoss

"Dental Floss" is Europe's largest waterfall by volume of water (193 cubic meters per second). Melt from the main icecap floods north down a gorge cut through basalt columns.

Offoss rating: Outstanding.

Editor's note: There is another waterfall downstream of Dettifoss. Simple conservation of mass and the possibility of additional side steams must mean the above record is, at best, dubious.