A hive can spawn in regions with caves or when opening an ancient shrine or at Infestation events. It is imperative that you destroy it as fast as possible. A few seconds after the encounter, it will start to deploy insects like megascarabs, megaspiders and spelopedes. Megaspiders or spelopedes tend the hives, and without them, the hives will begin to show lack of maintenance, and shortly afterwards will deteriorate in 2.5 in-game hours. Insects will attack creatures trespassing the hive's boundaries, except for wild animals. They will not chase too far away and won't defend themselves from attackers outside the radius. They will also mine random tiles which sometimes lead to Collapsed rocks falling from above and killing anything below.
If left untouched, hives will reproduce another hive in a random roofed tile within 10 tiles of themselves. The time between hive reproduction depends on difficulty. Hives can increase the temperature of their surroundings up to 38°C. It spawns 20 Insect jelly within 10.4 to 12 game hours in its direct radius, and 1 Glow pods within 12 and 24 game hours. Hives take damage at -20°C. If a dormant hive is damaged by a change in temperature, the insects may turn manhunter to attack the perceived threat. Hives will self-heal over time (10 hp per day).
During Infestation, full waves of insects appear during the first few seconds. The hives may expand to tiles with an overhead mountain, but not roofs.
When destroyed they drop 30 insect jelly.
Dormant hives may be present in maps which have caves. Those hives will not spread, although they will produce jelly and glow pods as usual. They will also spawn with insects around them, but they will not spawn more over time.