Location: 3mi North of St. Helena, CA.
Terrain: Very Easy

Napa Valley Letterbox

This letterbox is located in Bale Grist Mill State Park. Park your
car and walk the short trail to the Old Bale Mill. The path splits
near the mill and you can either walk right to go to the mill or you
can walk left. Go left. You will pass the restrooms and a round
water-tank looking building. From the watertank look diagonally
across the path. You will see a large rock alongside a small creek
bed. Half of this rock is covered with ferns and the other half is
covered with moss. Behind and underneath the rock on the mossy side
is where you will find what you seek. I have closed off the hole
with another rock, so you may have to move a rock to find the box.

After locating the box, head on over to some of the wineries for some
wine tasting to celebrate.