Not snakes. Heat, sun, dehydration and quad accidents, in that order.
People worry about scorpions and snakes. Both exist, both are nocturnal, and neither is a realistic concern on an organised afternoon safari. What actually causes problems is duller and more common.

Heat and dehydration first. The desert is drier than the coast and you lose water without feeling sweaty because it evaporates instantly. Drink before you are thirsty, take more than the camp provides, and if someone stops sweating, gets confused or stops needing to urinate, that is heat exhaustion and it needs shade and fluids immediately.
Sun second: at altitude, on pale sand, with wind removing the sensation of heat. Cover up rather than relying on cream.


Quad accidents third, and almost all of them are the same accident — someone accelerating on soft sand, turning too sharply, and rolling.
Quad accidents third, and almost all of them are the same accident — someone accelerating on soft sand, turning too sharply, and rolling. Keep to the guide's line, do not overtake, and treat the machine as heavier than it looks. Fourth is the cold: desert nights from November to March drop far below what the day suggests, and people go out in shorts.

