From Raleigh I-540 W To Exit 4B For 70W, 6.7 Miles To Exit 13 For I-85N/Us 15N Towards Petersburg - Go 2 Miles To Exit 180 For Glenn School Rd, Turn L, Go .4 Miles - Turn R On Glenn Rd. Go 1.3 Miles And Turn L Onto Glennstone Dr, L On Amber Stone.