This is what passes for local drama at one of the newer parks in the Presidio — open since 2022, built over the Presidio Tunnel Tops and connecting the main post to Crissy Field in a way that the old infrastructure never allowed. The park gets a fair amount of foot traffic on weekends: dogs on long leashes, kids running the small hills, the occasional person lying in the grass with a phone pointed at the sky to photograph a low-flying helicopter (which, for the record, is almost certainly PG&E doing a visual inspection of the transmission lines that run through the corridor).

The bag on the ground is not a crisis. It is, if anything, a sign that the park has fully arrived — that it is now an ordinary place where ordinary things happen, including the small social frictions of shared green space. Someone picks it up or someone doesn't. Someone posts about it on Reddit, earns 396 upvotes, and the comment reads only: With the bag of dog poo. Bravo.

Tunnel Tops sits in a strange position in the parks conversation — technically federal land managed by the National Park Service, free to enter, oriented toward the water, and still working out what kind of regular crowd it draws. On weekday mornings it's quieter. The Presidio Trust has been running programming there, farmers markets and lawn games, filling in the calendar in the way new parks do when they're still establishing a rhythm.

Walk through tomorrow and the bag will probably be gone. What you'll notice instead is the sight line — the way the lawn drops toward the bay and the bridge sits there, unhurried, in the middle distance. That part, at least, nobody is debating.