The La Sals, and the road out of the heat.

Mount Peale is the high point at 12,721 feet, making the La Sals the second highest range in Utah and the highest ground in the Manti-La Sal National Forest. Mount Mellenthin and Mount Tukuhnikivatz stand alongside it. Moab's valley floor sits at about 4,025 feet, so the range represents more than eight and a half thousand feet of relief within roughly twenty road miles, which is why the mountains look almost superimposed on the red rock country in front of them.

About two and a half to four hours for the full loop with stops, covering roughly 60 miles from the valley floor into the alpine and back down. It can be driven from either end: the southern approach leaves US-191 south of Moab through Spanish Valley, and the northern approach runs up SR-128 along the river and turns south through Castle Valley. Driving it as a loop rather than an out and back is the point, because the two halves are entirely different pieces of country.

The paved loop, yes, in season. It is narrow and steep with tight switchbacks but it is surfaced throughout and an ordinary car handles it in summer. The spur roads are a different matter: the routes to Warner Lake, Oowah Lake and Geyser Pass are unpaved forest roads of varying condition, and the Oowah road in particular is one people regret in a low vehicle. Check road status with the Manti-La Sal National Forest before committing, because conditions change with the last storm.

Roughly June into October, with snow closing the high sections on either side of that window. The exact dates move every year and the shoulder is unreliable, so the Manti-La Sal National Forest is the source to check rather than a calendar. A useful proxy for the mountain season is the alpine top of the Whole Enchilada mountain bike route, which starts at Burro Pass at 11,200 feet and opens on 1 July at the earliest, closing with the first snow, usually in September or early October.

In high summer, roughly twenty to thirty degrees at the aspen belt around 9,000 feet. With July valley highs averaging near 99 degrees and many days above 100, that is the difference between a day you have to plan around and a day you can simply spend outside. The loop road climbs into that air within about half an hour of town, it costs nothing, requires no permit and takes no booking, which makes it the most useful thing in the Moab area on a hot afternoon.

Because they are laccolithic rather than sedimentary. The plateau country around Moab is layers laid down and then cut into by water. The La Sals formed when molten rock pushed up beneath those layers, doming them, and was then exposed as the cover eroded away. They are a geological intrusion in the literal sense, which is why an alpine environment of aspen, spruce and high lakes sits directly above a red rock desert with no transition worth speaking of.

Yes. Warner Lake and Oowah Lake are both stocked trout water at altitude, and both are a completely different day out from anything happening in the valley. Warner Lake is the more accessible of the two, with a Forest Service campground beside it and trailheads for a good deal of the high country walking. Oowah is smaller and quieter and reached on the rougher road, which is exactly why the people who prefer it prefer it. A Utah fishing licence applies as everywhere else in the state.

The recurring hazard is timing rather than terrain. Convective thunderstorms build over these mountains through the early afternoon in summer with great regularity, and above the treeline there is no shelter: lightning, hail, a sharp temperature drop and lost visibility can all arrive within fifteen minutes. Start high routes at first light and plan to be off exposed ground by early afternoon. In winter the range becomes avalanche terrain and a backcountry proposition rather than a drive, with a forecast to read before going near it.

La Sal is Spanish for the salt, and the name is generally attributed to early Spanish travellers who mistook the white on the summits for salt deposits rather than snow, reasoning that peaks in this desert should not still be holding snow in summer. Whether that is literal history or a neat explanation attached later is not settled, and interpretive material for the range tends to present it as tradition. The underlying observation stands: these summits hold snow long after the desert below has dried out entirely.