When you've chipped seconds off each mile during a race, resulting in slower-to-faster mile splits from start to finish, you've entered the subzero category.
Riding his motorcycle at close to subzero temperatures, wearing 3 layers and suffering in discomfort, he taught of making a comfortable and warm pair of trousers for the motorcycle.
In tropical climates, skeletonization can occur in weeks, while in tundra areas, skeletonization may take years, or may never occur if subzero temperatures persist.
During prolonged subzero periods, the spray creates an ice arch across the river above the waterfall and sometimes a rope was strung across the river there to quicken this development.
