Deathworld by Harry Harrison — Read

Real as they had been, the training chambers had not prepared him for the surface of Pyrrus. There was the basic similarity of course. The feel of the poison grass underfoot and the erratic flight of a stingwing in the last instant before Grif blasted it. But these were scarcely noticeable in the crash of the elements around him.

A heavy rain was falling, more like a sheet of water than individual drops. Gusts of wind tore at it, hurling the deluge into his face. He wiped his eyes clear and could barely make out the conical forms of two volcanoes on the horizon, vomiting out clouds of smoke and flame. The reflection of this inferno was a sullen redness on the clouds that raced by in banks above them.