"Hundreds of people lined the river bank." (Park, p.77). Soldiers were forcing people into the water. "The rain, the mad currents, the bullets, the crocodiles, the welter of arms and legs, the screams, the blood." (Park, p.79).
Crossing the desert was very challenging for Salva. "He had to slow down, and . . . he began to lag behind." (Park, p.53). But Uncle helped him through it. "When they reached the bushes, Uncle pointed out a clump of rocks up ahead and told Salva to walk as far as the rocks. After that, a lone acacia . . . another clump of rocks . . . a spot bare of anything but sand." (Park, p.54).
"Finally, the boats pulled up to an island in the middle of the Nile." (Park, p.47). The travelers weren't prepared for the mosquitoes. "Only a few minutes later, mosquitoes rose up from the water, from the reeds, from everywhere. . . . Thousands, maybe millions, of hungry mosquitoes massed so thickly that in one breath Salva could have ended up with a mouthful if he wasn't careful." (Park, p.49).