This was addressed in the accepted answer: > rapid rewarming from open campfires or other sources of dry heat caused so much devastation.....Dry heat from .

This was addressed in the accepted answer: > rapid rewarming from open campfires or other sources of dry heat caused so much devastation.....Dry heat from ....open fires....cannot be controlled. Excessively high temperatures are usually produced, resulting in a combined burn and frostbite, a devasting injury that leads to far greater tissue loss. Sounds like it was an overreaction to applying excessive heat to the frostbitten tissue.