Pure Plant

A large island in the river northeast from the Ark in quadrant F-19.

It's inhabited by a group of 40 to 50 humanoid creatures called "Pure-Ones". They speak a rudimentary version of our language. All dressed like Zone-Ghouls and they exhibit a somewhat similar response to sunlight as Zone-Ghouls do. They live in the largest building.

Bolt learns this island is a water purification plant with various basins and buildings all serving this process.

In the middle of the island there used to be a huge chimney where a giant bird had its nest. But this chimney collapsed.

There's a pigsty near the back-end of the island.