The temporary Visitor Center, with free maps and other info, is at 106 Montgomery in a beautiful old building next door to the Disney Museum.
As I walked further to the north edge of the Main Post, noticed one of the old stairways from the Crissy Field area up to the Main Post is still there and walkable.
Strolled on to the Tennessee Hollow Trail (a trail marker here now) where the “daylighted” area is.
In the 1870s soldiers grew vegetables along the banks of a creek here that supplied water to a salt marsh where Crissy Field is now.
Various buildings were later built over the site and when they were demolished in the 1970s became part of the army’s landfill.
Tons of this landfill were removed by volunteers in 2005, and these days more than 300 native plant species provide shelter for various animals. Sat for a while on one of the benches listening to birds.
A 2010 film about this by Melissa Peabody, presented as an online video, showing how the landfill was removed and the creek restored:
The foto: the west trailhead of the Batteries to Bluffs Trail down from Battery Crosby.