Hell's Gate Thermal Park:
It includes steaming lakes, mudpools, fumaroles, and Kakahi, the largest hot waterfall in the Southern Hemisphere. And stinks! phew...
These mud pools were everywhere in the village
Mud Pools near Waiotapu
Rotorua, New Zealand
December 2013
Rotorua, NZ
at Tepuia
Waiotapu thermal mudpools: the largest in the Southern Hemisphere apparently.
Near Taupo
Myvatn, Iceland