Tunnel Construction (1 janv. 7572 av. J.-C. – 1 janv. 7542 av. J.-C.)
Description:
Tunnels to the surface are expanded, and massive circulating fans are constructed. Exact dates unknown.
Ajouté au bande de temps:
Date:
1 janv. 7572 av. J.-C.
1 janv. 7542 av. J.-C.
~ 30 years