[@Lucius Cypher]
AND WE'RE GOING FOR THE QUADRUPLE, CAN I LAND IT?!

The very first IC post includes a bit of a blurb that can apply to everyone's births, though they don't all have to be from the same litters/divisions/egg clutches/etc. It also includes a little bit about the landmarks of the cave, so after reading it you should probably have enough info to come up with something. If not, please let me know and I'll try to answer any questions or point you in a direction.