what happen in chapter 15?

- They arrive at Snæfell which is 5,000 feet high.

-They hike up single file passing through a vegetable fibrous peat bog, "left from the ancient vegetation of this peninsula. The vast quantity of this unworked fuel would besufficient to warm the whole population of Iceland for a century."

-Much of the chapter has to do with the other various geographical traits of the volcano.

-They reach near the top but a type of storm seems to be rising towards them, "An immense column of pulverized pumice,sand and dust was rising with a whirling circular motion."

-They keep climbing towards the summit and find refuge in a crater.