Image above: Black Phoebe, by Pranav Tadepalli via Wikimedia Commons. CC-BY-SA 4.0
Simply wander the flat trail that half-circles Mountain Lake. There is no structured path you need to follow.
The PDF guide here was created by Jonah Benningfield in collaboration with the Presidio Trust. The photos belong to him, so we aren’t reposting them on presidio.tours. But you can always access the PDF as it is posted on presidio.gov (link below).