Eastern Sierra and Mt Shasta

Here's the eastern Sierra and Mt Shasta with lightning. Back 140 years ago, Muir and a friend would ascend the peak. After a day and half they made it to the top. Suddenly a freak storm came upon the mountain. They had to stay another 72 hours until the storm cleared. Nearly dying in the process. The only thing that saved them was that they nestled in a crevice in the mountain during sub freezing temperatures. They barely made it back hungry, tired and almost frozen to death. His friend broke a couple of bones on the way back and both stayed over at the nearest hospital for treatment.