You can never detect in a National Park. Ever. Ever. And after that. They'll confiscate your machine, your car, throw you in jail and can get years behind bars and a 6 figure fine.
1970 COMPASS-
WHITES SILVER EAGLE-
WHITES DFX, 4X6DD COIL, 6X8DD COIL, 950 COIL, 10X12SEF COIL-
GARRETT PRO POINTER AT, GARRETT AT PRO , MINELAB EXPLORER SE with 8.5x12.5 Cors coil
ive been there-----be careful-------i had good luck just out of gburg, in littletown. that was back about 1990, i walked the rr tracks and got cw bullets, buttons and 3 indian head pennys----