The Grasslands Ring, also commonly called East 1 is a regular puzzle area, and the first one that the player visits. It is described as an artificial ring-like structure on the wide lowlands east of our base camp.
When the first man picked up the first stone, he did not do so to forge a tool; he did so to smite his brother.
Prometheus Sparks
[ location of the first spark ]
Near the entrance to Castling. While standing in front of the entrance to the puzzle, turn right and walk towards the corner ledge. Look down to a platform where you can drop to get it.
[ location of the second spark ]
Surrounding Alternatives, follow the path by the wall opposite the puzzle entrance to find it next to a statue.
Lost Lab
The lost laboratory is located in the northern shore of the marsh that surrounds the tower. It features a driller test unit mounted on a table. It also contains the terminal VALA-1.