UN 13,015 (formerly UN 13,020 interpolated) near Maroon Lake and Willow Pass has been determined to be no longer a ranked summit per Lidar evaluation, which gives it 292 ft. of prominence. This has reduced the total number of ranked 13ers from 584 to 583. We will be adjusting our list in the near future.
From the Town of Gunnison: Turn north at the center of town on HWY 135. Pass through Almont and continue toward Crested Butte. About 2 miles before reaching the town, turn right onto CR738 which also becomes FR738. This is locally known as the "Pearl Pass Road." The road starts out paved, then changes to graded gravel. It initially passes through a subdivision. Before turning off the highway, you'll have outstanding views of Teocalli Mtn. Passenger cars can make it in the first 4 - 5 miles to a little past the junction where the East River comes in. Just about the time FR 738 begins to gain elevation, there is a primitive camp area on the right. Passenger cars should be parked here. Higher clearance vehicles and 4WD can continue north. Stay right at the next road intersection in about a mile, continuing on FR738. The road will drop down briefly to a low water crossing of West Brush Creek. Continue driving another 4.5 miles appx. to the Twin Lakes trailhead parking which turns off the main road to the left. If only driving in to climb Teocali, it is not necessary to drive all the way to the Twin Lakes TH. There is a primitive campsite on the west side of the creek at these coordinates: N 38° 56' 26.55 W 106° 51' 36.78". Elevation 10,100 ft. This is about 1.1 mile south of the Twin Lakes TH. An indistinct road turns off to the left and leads down to cross the creek with the campsite being on a bench just above the creek at the coordinates above. If unable to ford the creek, then it's possible to car-camp where this road turns off,
There are some good, primitive campsites right at the trailhead with some protective trees. You may find other weekend adventurers camped here. Also, see the coordinates provided above for a possible campsite before reaching the Twin Lakes TH that can serve as the TH for hiking Teocali.