Does anyone know of any occupations that require a great deal of independence & isolation?

Both Geographically and Socially. A job where the majority if not all of your time is spent alone and possibly out in nature. Any ideas?Does anyone know of any occupations that require a great deal of independence %26amp; isolation?
Only one I know is computer programing...Lots of isolation but not outside. Gotta be half crazy also.Does anyone know of any occupations that require a great deal of independence %26amp; isolation?
an architect.
maytag repairman