The Giant Beaver Dam is a structure created by wild Castoroides. They can spawn on land or in the water and are approximately the size of a 1x1x1 structure. Wild Giant Beavers will become hostile if a player accesses one.
Giant Beaver Dams can contain large quantities of the following which makes them very rewarding when found.
Beavers can be found near bodies of water at specific locations on the map. Here is a map of beaver spawn locations. Dams themselves can appear anywhere there are wild castoroides (if they are moved outside their spawn areas for instance). On Ragnarok, there is an area known as the Beaver sanctuary that is unique in that there are 3 unique beaver lodges and two actual beaver dams located that spawn in the same location guaranteed.
The Giant Beaver Dam is an excellent source of several important resources. However, to get the most out of vandalizing beaver homes, keep the following in mind:
- Beaver Dams will not restock their inventory. As wood is the only heavy resource spawned inside the dam, many players will harvest everything else and leave the wood inside. Throw the wood on the ground instead so that the dam is demolished, and the now-homeless Castoroides will soon build another which can then be harvested for more resources.
- It is possible to build a Beaver Dam Farm, by building walls around a beaver and allowing them to build a dam at a more desirable location.
- If possible, do not kill the Castoroides protecting the dams. It is far from guaranteed that more beavers will spawn to replace them. One tactic is to take a flyer, open and close the dam to draw the ire of nearby beavers, then lead them somewhere up- or downstream before flying out of render range. Once the Castoroides no longer render on your screen they will no longer be hostile to you. As they will be downstream from their dams, you may return and loot at your leisure.
- Beaver dams can spawn both above and under the water, on cliffsides, and even in seemingly inaccessible nooks and crannies. If you see several Castoroides but no dams, they may be in hard-to-see spots, including behind waterfalls, under a resource node (often a large stone), or deep in murky water.
- Underwater dams require special preparation and caution. Castoroides are considerably faster and more maneuverable underwater, and may be difficult to spot in the distance. Also, the moment the player begins swimming they will attract the attention of every Megapiranha in range. Be ready to kill these before you harvest the dam!
- Two of the locations that spawn dams on The Island are on the edge of swamp biomes. Players should clear the area of Sarcos and Titanoboas in addition to other threats, especially if you'll have to swim to the dam.
- While a player can create a "dam farm" by importing beavers to another area, beavers outside of their native environment or in an insufficiently large enclosed area in their native environment will despawn in a few hours.
- A dam is "claimed" when it is built by a Castoroides, which will try to stay within a few dozen meters of its claimed dam. If the beaver moves out of range, the dam becomes unclaimed. At present it appears that a damless Castoroides will not claim an unclaimed dam and will instead spawn a new one of its own.
- This is the first structure to be made by wild creatures, and the first to be found naturally.
- They can be accessed like Loot Crates but once accessed the Castoroides around you will become hostile.
- The Hidden Lake is often a coveted base location, part of which is its status as a natural beaver dam farm. If no structures are built in or next to the lake, it will spawn and maintain a healthy population of beavers and dams for whatever tribe can hold the area.
- The health of the dam is 1867, which may be a reference to the year of the country Canada's confederation (1867). This may be because Canada's national animal is the beaver.
- While the structure is called a dam in-game, it more resembles the nesting place of beavers, which are called lodges.