Cave Wyvern Hives

One of the most dangerous things you can find underground is a Wyvern Hive. After it has been discovered, 3(1d4+2) of Wyverns will come out and attack the players. 112(2d100+33) Wyverns will inhabit this Hive, and might come out and attack. The structure itself is made of mud, clay, rock, and bone, and kobolds may live in abandoned ones. In the deepest parts of the Hive are several chambers. One inhabiting the eggs and newborns, the other being the queen's quarters. They have a main exit for emergencies, and many bones of creatures. The Wyverns will attack any intruders, and is a good idea to use stealth. The queen  will only attack upon trespassers entering here room, and will enter combat immediately, attempting to kill them. The remaining Wyverns will simply continue on, in which kobolds will often take control of the place.