Caves are known for being generated randomly throughout the world and are also known for their loot, which may or may not be rare, and it is also quite common to find some ores in caves, both in normal caves and in custom caves.
Many players use it as a refuge in a battle where the hybrid's level may be higher than theirs.
the caves also have the possibility of giving players gold bones, before this was not a concern for players because they could go to the servers and buy them without having to explore the world to find them, but now that the servers have closed they have become more difficult to find, but there is a however, they have not become so difficult because some NPCs like octo-kitty and others can sell 1 or 2 of these bones for a price that today is considered cheap by most players, the price is 1,000 coins depending on how many you want.