The Deep Purple Vents entrance is considerably different, hosting many Bioluminescent coral-like rocks and many jagged spikes breaching the ground around the cave. The entrance from Marguerit Maida's Base is slightly different from the rest of the biome, sharing similar Flora and geological structures to the Tree Spires biome as well as holding many large plateaus to hold said flora and structures. Towards the end of the biome, the player can find two entrances to the Fabricator Caverns. The entrance to the biome is home to large amounts of Hydrothermal Vents, as well as Ribbon Plants. The biome is rich in Raw Materials as well as various Large Resource Deposits. The region consists of clusters of large crystals littering a majority of the biome.
Additionally, Uraninite Crystals can be found within these patches of seagrass.
Large patches of yellow seagrass hosting a number of Jade Membranes can be found throughout this region. The overall terrain is composed of layered and folded rocks forming cliffs and ridges, as well as a few trenches. The Main Crystal Caves is the primary and most expansive region of the biome.
