lavo1505 Colorful deposits in Bumpass Hell thermal area, early summer. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1505.html havo49464 Sulphur deposits and vents (Haakulamanu). Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo49464.html lavo1504 Green pool in Bumpass Hell thermal area. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1504.html havo49463 Uluhe ferns and sulphur bank. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo49463.html havo49465 Mound of rocks covered with sulphur from vent. Hawaii Volcanoes National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.havo49465.html lavo1508 Mud cauldrons and fumeroles in Bumpass Hell thermal area. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1508.html lavo1516 Turquoise pool in Bumpass Hell thermal area. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1516.html lavo1507 Colorful deposits and turquoise pool in Bumpass Hell thermal area. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1507.html lavo1502 Sulphur works thermal area. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1502.html lavo1506 Thermal pool in Bumpass Hell thermal area. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1506.html lavo1503 Colorful deposits in Bumpass Hell thermal area. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1503.html