801-1426 - Hellen Lake with Mount Lassen, 3187 m, in the background, Lassen Volcanic National Park, California, United States of America, North America
801-1428 - Lake Helen and Mount Lassen, 3187 meters, in the background, Lassen Volcanic National Park, California, United States of America, North America
83-11921 - Looking south towards Lake Helen from dormant 10,457ft Lassen Peak, the world's largest plug-dome volcano, in Lassen Volcanic National Park, an area of volcanic activities and features, Lassen Volcanic Park, Northern California, California, United States of America (USA), North America
83-11799 - Sulphur deposits at 'Bumpass Hell', the largest area of mudpots and steam vents at this national park around Lassen Peak volcano, Lassen volcanic national park, California, Usa
83-11920 - Dormant 10,457ft Lassen Peak, the world's largest plug-dome volcano, in Lassen Volcanic National Park, an area of volcanic activity and features, Lassen Volcanic Park, Northern California, California, United States of America (USA), North America
83-11876 - Lake Helen and the dormant 10,457ft Lassen Peak, the world's largest plug-dome volcano, in Lassen Volcanic National Park, an area of volcanic activities and features, Lassen Volcanic Park, Northern California, California, USA
83-11919 - Manzanita Lake and the dormant 10,457ft Lassen Peak, the world's largest plug-dome volcano, in Lassen Volcanic National Park, an area of volcanic activities and features, Lassen Volcanic Park, Northern California, California, United States of America (USA), North America
83-11788 - 'Cold Boiling Lake' in Lassen Volcanic National Park, Northern California, Usaan area of volcanic activities and features around Lassen Peak volcano
83-11797 - Sulphur deposits at 'Bumpass Hell', the largest area of mudpots and steam vents at this national park around Lassen Peak volcano, Lassen volcanic national park, California, Usa
83-11846 - Lake Helen and the dormant 10,457ft Lassen Peak, the world's largest plug-dome volcano, in Lassen Volcanic National Park, an area of volcanic activities and features, Lassen Volcanic Park, Northern California, California, USA
83-11798 - Sulphur deposits at 'Bumpass Hell', the largest area of mudpots and steam vents at this national park around Lassen Peak volcano, Lassen volcanic national park, California, Usa
83-11949 - Fir trees in the south west of Lassen Volcanic National Park, an area of volcanic activities and features, Lassen Volcanic National Park, Northern California, California, United States of America (USA), North America