Overview
SwampRuin1 is a Valheim world location that spawns in the swamp biome, identified internally as SwampRuin1. World generation places up to 50 per world, with terrain constraints (min altitude 0), and an exclusion radius of 12m, which is why some seeds have far more of them than others. The data tags it as randomly damaged and vegetation allowed.
About
SwampRuin1 is a ruined stone structure variant found in the Swamp. It contains Swamp-tier loot and may be guarded by Draugrs.