# Subterranean Facilities/The Lava Tubes

-The Reliquary (discussed in the [Xenotechnological Incident](https://kgco.AspenArkive.com/books/the-asteriicinquefoilsnemesis-xenos-heavy-encryption/page/the-lava-tube-xenotechnological-investigation-and-incident "The Lava Tube Xenotechnological Investigation and Incident")) and the front line defenses of [the 508 ](https://kgco.AspenArkive.com/books/asterion-locations/page/the-508 "The 508")indicate that the Lava Tube network in Asterion's subterranean reaches is likely to hold additional locations with evidence of Cinquefoil presence.

-The subterranean [Null Singularity](https://kgco.AspenArkive.com/books/the-asteriicinquefoilsnemesis-xenos-heavy-encryption/page/null-singularity-device "Null Singularity Device") bears hallmarks of Cinquefoil Construction