The facility's entrance became visible only when they approached within fifty meters. Spatial displacement similar to what had retrieved the materials—the mountain itself seemed to fold, revealing passage where solid stone had been moments before.
No defensive constructs. No warning systems. Just open invitation from someone who'd detected their approach and chosen to allow access rather than force confrontation.
The passage led deep into the mountain through corridors that showed the same integration of natural and artificial construction the external scans had detected. But what hadn't been visible from outside was the scale. This wasn't small research facility. This was comprehensive installation that extended through multiple levels carved into the mountain itself.
