The park is only accessible for zero carbon travel for a few weeks after the required shuttle service ends (mid September) and before the road closes (early to mid October). Shuttle buses are useful for reducing carbon pollution, but unless they’re sustainably fueled, they’re out of bounds to me. Red’s Meadow Cafe was still open, but the resort was closed when I arrived late September.

Since both the John Muir and Pacific Crest Trails run together through the park, I recommend you hike in a loop around the base of the broken basalt columns, across one of the two bridges across the Middle Fork of the San Joaquin River, along the combined JMT & PCT trail ridge where I got the photo, and back across the other bridge. There are also pretty waterfalls at both the north and especially south ends of the monument, but be careful hiking as the park is at around 7,500 feet in altitude up near the Mammoth Mountain ski area. There’s also a trail up through the trees to the top of the columns, which were formed 80,000 years ago when a diabolically molten lake cooled and cracked deeply in hexagonal and similar shapes and which were revealed by glaciation 15,000 years ago. Enjoy!