Overview
TrollCave02 is a Valheim world location that spawns in the black forest biome, identified internally as TrollCave02. World generation places up to 250 per world, with terrain constraints (delta 5-10, min altitude 3), and an exclusion radius of 12 (24)m, which is why some seeds have far more of them than others. The data tags it as interior randomly generated.
About
TrollCave02 is a randomly-generated Troll cave in the Black Forest. Inside, a Forest Troll guards chests with Coins, Amber, Bronze nails, and other early loot.