If you want to get one but always die in the trench bring a high level megalosaurus with lots of health and damage, when you get the egg run as quickly as you can to your mega and kill all the rock drakes that are coming.
When you have a rock drake it will be much easier to get more just go invisible and run away with your rock drake.
(Don’t blame me if something does not work it always works for me)
They lose 1 point of food every 15 seconds, so to time how long until they start starving, multiply their current amount of food by 15 and then divide by 60 twice. This will give you the number of hours left untill the food stat reaches 0.
((15 x food)÷60)÷60
Obtaining this creature will require you to enter the tek trench where puprle liquid and the nests of these creatures lay past the bioluminescent chamber, there you must steal an egg and raise in a cold environment feeding it nameless venom you can get by killing nameless
The rock drake trench can be found at 57,56 at the area of the map called grave of the lost. Recommend u bring a glider suit and climbing picks and if u have a good tame to fight the drakes. In the wild they can be invisible and can glide in the wild so watch out also wear a HAZARD SUIT it's needed. Lastly there are a lot of nameless in the area so bring a light source. Good luck and ohh it needs to be cold to hatch so air cons
Best method for stealing eggs: Tame 2 megalosaurus (opposite gender) and breed them. Your imprinted baby will be the one you ride on. Then, you take your imprinted megalo and the opposite gender for mate boost. Btw each megalo should have at least 14k hp and 320 melee. Use this method for easy first drake.