The 2,582-meter (9,357-foot) stratovolcano is mantled by a 30-square-kilometer (10-square-mile) glacier field, most of it amassed south and east of the summit in a basin made by a calderadepression.
The mountain is encircled by the doughnut-shaped depression of the caldera.
山为环形的破火山口洼地环抱着。
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Active lava lake inside the main caldera at night, glowing breaks through the thin and partially broken crust at Erta Ale volcano in the Danakil depression, Rift Valley, Ethiopia.