View to the Kurile Lake and Iliinsky volcano from Zheltovsky volcano. Dissected surface of the Kurile Lake caldera ignimbrite is in the foreground. Iliinsky is located in a depression, which may be a collapse crater of the late Pleistocene pre-Iliinsky volcano. The collapse is believed to occur due to the earthquakes accompanying the caldera-forming eruption ab.7600 ¹⁴C yr BP. Large fresh crater on the Iliinsky slope formed as a result of the 1901 phreatic eruption. Dikii Greben' extrusive massif is on the right just across the Kurile Lake. Kambalny and Kosheleva volcanoes are in the background.

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