Hollow Rock Facility
From Official Sixty Four Wiki
Hollow Rock Facility is one of the Machines in Sixty Four.
Hollow Rock Facility is a machine that doubles the maximum amount of 
Hollow Stone that can be present at once around it and increases their spawn rate.
Hollow Rock Facility is unlocked when ?
Hollow Rock Facility Function[edit | edit source]
Hollow Rock Facility's main function is to increase the production of Hollow Stone.
Hollow Rock Facility Construction Costs[edit | edit source]
Hollow Rock Facility can only be built once.
Hollow Rock Facility is an upgrade of 
Hollow Rock Research Site so it requires the original machine to be constructed.
| Stones | Costs |
|---|---|
 Charonite |
8,388,608 |
 Elmerine |
4,194,304 |
 Qanetite |
4,194,304 |
 Beta-Pylene |
4,194,304 |
 Chromalit |
32,768 |
 Celestial Foam |
262,144 |
| Hollow Stone |
16 |
 Void |
64 |