The most catastrophic surge to date occurred on September 20, 2002, when a mass of ice, water and rocks streamed down a 4 km stretch of the valley with an icy mudflow travelling a further 12 km.
Ice within the debris began to melt almost immediately, creating new lakes and flooding some settlements which, contrary to the old traditions, had been built on the valley floor.
The height of the mudflow peaked at 140 m, with the height of the debris near the wall of the Skalisty Ridge reaching 100 m. The village Nizhniy Karmadon, along with several rest houses beside the river were obliterated.
At least 125 people were killed and many others were injured.
The village has not been rebuilt.

The surge resulted in the complete destruction of the glacier leaving behind an empty cirque, a phenomenon not previously observed anywhere else.
The large amount of subglacial water resulted in a surge so powerful, that the glacier was practically ejected from its basin.
Nonetheless, it reappeared only 2 years later and is currently growing again.
The most catastrophic surge to date occurred on September 20, 2002, when a mass of ice, water and rocks streamed down a 4 km stretch of the valley with an icy mudflow travelling a further 12 km. Ice within the debris began to melt almost immediately, creating new lakes and flooding some settlements which, contrary to the old traditions, had been built on the valley floor. The height of the mudflow peaked at 140 m, with the height of the debris near the wall of the Skalisty Ridge reaching 100 m. The village Nizhniy Karmadon, along with several rest houses beside the river were obliterated. At least 125 people were killed and many others were injured. The village has not been rebuilt.
The surge resulted in the complete destruction of the glacier leaving behind an empty cirque, a phenomenon not previously observed anywhere else. The large amount of subglacial water resulted in a surge so powerful, that the glacier was practically ejected from its basin. Nonetheless, it reappeared only 2 years later and is currently growing again.
Kolka Glacier