Natural Apertures is a Vaulters-specific technology on the Exploration and Expansion technology tree with a research cost of 4000 . It unlocks one Empire Improvement, requires research in Advanced Warp Gravitics, and allows no further research.
"The discovery of naturaly-occuring weak points in the fabric of time-space has allowed a great leap in the use of portal transport. By building or re-aligning portals according to locations where objects more easily slip between dimensions, the energy cost of portal travel is greatly reduced."
- -25% teleportation movement cost on empire