Rock drakes are a strong animal, the way to tame them is getting an egg from their nests, for this you will need to go to the red zone with the pink liquid, in there you will find the nests, for this you will need a good tame (karkinos or spinosaurs), go with tribemates if you have and an armor that can protect you for radiation (2 or 3 of the hole armor), like the wyverns rick drakes will atack after you take the egg so my personal recomendation is to kill every rock drake close to the egg tou choose so the number of rock drakes ataking you after you took the egg will be less, after you went out of the place you eill need to have 20 to 23 air things because it will need to be really cold, after that you will need nameless venom to raise the rock drake