Glass is naked and drying his clothes beside a small fire. He has swum about a mile downstream before finally getting out of the river and finding this sheltered spot.
It's getting so cold out that Glass sleeps on top of stones heated in the fire.
After two days of travel, Glass decides to bypass the nearby Mandan village and head straight to Fort Talbot, where he can resupply. He also decides to do some hunting.
Glass trails some elk, but before he can take them down he notices "three mounted Indians" who are clearly Arikara (2.18.13). Can't say we're surprised at this point.
Panicked, Glass runs in the opposite direction, only to find his progress halted by another mounted Indian. Seriously?
This new entrant carefully takes aim...and fires. But not at Glass. Instead, he takes down one of the charging Arikara's horses.
Glass takes down a second, and the warriors retreat. He learns that his savior's name is Mandeh-Pahchu, and he's part of the Mandan tribe—long-time enemies of the Arikara.
The chief of his tribe, Mato-Tope, is vehemently opposed to the Arikara's attacks, as they limit his opportunities to trade with his pale pals. Mato-Tope also happens to have a very foxy daughter who might be impressed by Mandeh-Pahchu bringing Glass to their camp.
Glass has no interest in that, however—he just wants to go to Fort Talbot.
Well, it might not be as flashy, but it still might impress Mato-Tope's daughter.
Mandeh-Pahchu and Glass's approach to Fort Talbot is met by a bullet whizzing inches over their heads. What a warm welcome.
Glass explains his sitch to the guard and asks to be let in. The guard blames his errant shot on paranoia imbued by recent Arikara attacks and demands that Mandeh-Pahchu (whom he refers to in grossly racist terms) stay outside.
The fort feels "like a place under siege" (2.18.39). The men regard Glass with hostility and say that they don't have many supplies to spare.
Glass gets some mittens, a blanket, and a skinning knife and gets out of there as quickly as possible, mid-racist tirade. These dudes are real buttheads.
Before setting off for Fort Union, Glass thanks Mandeh-Pahchu and gives him the skinning knife.