Lava flow at Nyiragongo

1600 × 1200

Volcano camp at night

990 × 659

National Geographic Explorer in Antarctica

1600 × 1000

Climbers on Mount Erebus

1600 × 1200

Climbers on a snowy mountain

1600 × 1200

Hikers on a mountain ridge

1600 × 1200

Antarctic research station

1600 × 1200

Tent on a snowy mountain

1024 × 768

Lava flow at night

1920 × 1200

Volcano erupting at night

1600 × 1200

Minecraft volcano at night

1175 × 695

Arenal Volcano erupting

1152 × 864