Please park at posted coordinates. It's the best (and closest access) and will give you safe passage to the goods.
An interesting roadway here. They carved (well....blasted actually) out the passageway through a lot of rock. A big job indeed. However, don't be climbing on any of these rocks. They are quite crumbly, plus the local authorities will likely haul you to the local Gray Bar Hotel if they catch you.
Take the nice sidewalk right to the goods, and don't venture any farther than you need to. Matchstick container here that should be accessible any time of year.