The Ruins of Ancient Guk is a vast array of tunnels that connect between the ruins themselves and the upper tunnelways that eventually lead to the Innothule Swamp. It is also the battleground between the living frogloks, led by the Froglok King, and the undead who have taken over most of the deepest ruins, led by their Ghoul Lord.
Lower Guk is accessible from Upper Guk in 4 areas, however, 3 of the 4 entrances lead to near the same spot, called the "dead side entrance". The entrance from upper guk that is further away from the rest leads to the "live side entrance". Guk is typically divided into two sections, live side and dead side. The live side contains live frogloks, while the dead side contains froglok ghouls. These two factions are supposedly warring, although they won't attack each other or anything like that.