A PROVO CANYON HIKER LEARNED SOME TOUGH LESSONS OVERNIGHT, AS HE SAT ON A CHILLY CLIFF... WAITING FOR DAYLIGHT, FRIDAY MORNING, SO UTAH COUNTY RESCUERS COULD HELP HIM DOWN.

FOR STARTERS, SHERIFF'S LT. WALLY PERSCHON SAYS, THE MAN LEARNED... STRAYING OFF A MOUNTAIN PATH -- 2-THOUSAND FEET ABOVE THE VALLEY FLOOR -- ISN'T WISE.

THE MAN DID DO ONE THING RIGHT, BY CARRYING A CELL PHONE.

HE CALLED 911 HIMSELF, ABOUT 11:15 THURSDAY NIGHT, WHEN HE REALIZED HE COULD NO LONGER MOVE UP OR DOWN, SAFELY.

HE WAS COLD AND HUNGRY -- BUT OTHERWISE IN GOOD CONDITION -- WHEN A RESCUE HELICOPTER HOISTED HIM OFF THE CLIFF.