Asri-unix.1100 net.space utzoo!decvax!ucbvax!C70:sri-unix!CLJones.Multics@MIT-MULTICS Thu Mar 25 06:11:08 1982 South American anamoly The South American anamoly is an area where the Van Allen (tm) belts are particularly close to the surface of the earth. I recall reading in Michael Collin's book ''Carrying the Fire'' that Gemini X, which reached a maximum altitude of 476 miles or so right in this region, was scraping the bottom of the belts, and some people were concerned about the increased radiation the astronauts would be exposed to. Radiation badges they carried showed no particular problems, though.