The prominent crimson streak in the center of this false-color satellite image represents the remains of a 50 km (31 mi) lahar (volcanic mudflow) that cut a strip of barren rock through rich vegetation surrounding the Anyuyskiy Volcano. The currently dormant volcano is the orange circular shape at the right end of the streak. Remote and largely inaccessible, the Kamchatka Peninsula is a rugged collection of towering volcanic peaks, steep valleys, active geysers, and wild, snow-fed rivers and streams. This volcano is part of the UNESCO World Heritage Site "Volcanoes of Kamchatka." For other active volcanoes in Russia, see the Natural hazards-volcanism subfield in the Geography section. Image courtesy of USGS.