This week was a bit rough for The Jungle as we adapted to the latest server update. After a couple days on our maintenance server, we're back up running on the main map again. (I run the maintenance server - with monsters on, PVP on, and limited plugins - while awaiting hMod, Cuboid and other essential plugins to be updated.)
Currently monsters and animals are off as we're evaluating a significant lag issue, trying to determine whether they are the contributory factors.
The Jungle is a public server with open access.
Our server has been in operation since early October with nearly 24/7 access.
Visitors can build immediately, however they have some limitations on available commands and allowed areas until upgraded to full user status.