Tour de tramontana

Selon FN:

The cristoforos developed techniques of staying warm through the terrible winters at Nevarsion, and the workers at Tramontana, where it also got very cold, had adopted somme of them for use during long nights of work with little movement.

He visualized the core of his body as a furnace with the flames leaping ever higher. Within minutes, the warmth from his own body enveloped both of them...