Massive Creature Skeletons are harmless anomalies and point-of-interests that spawn near forest biomes and roads. It is the remains of some large unknown creature, or it may be an anomalous rock formation in the shape of a skeleton. Neither is known for certain. The interior sometimes contains a sub-anomaly such as an Urchin Field or Orb Field. The ground underneath the skeleton is littered with perfectly round boulders. The reason for this is unknown.
Artifacts have a chance of spawning in sub-anomalies.