← The Eighteen Astral Bridges
Puma Punku
One of the eighteen Astral Bridges, and Amelia's guardian post — the site's H-shaped blocks were cut with such exact interlocking precision that no two stones sit the same way twice, and that precision is the lock Neterios's signal fits into.
In the game — the H-Block Fit task: the H-blocks have been pulled apart and mixed up. Fit each one back into its single correct neighbor before the imprecise refit breaks the seal. Completing it adds Amelia to your portfolio and unlocks permanent fast travel to Puma Punku.
The original design -- Puma Punku was sketched by Fadwa, by hand on tablet, before it ever became part of Gravitrek.