E 23 North cavern.
At the west end is a circle symbol, gate to the Air Node.
 
The Earth Node 1 2 3 4 5 6 7 8 9 10
T4 Node of Elemental Evil 11 12 13 14 15 16 17 18 19 20
T1-4 Temple of Elemental Evil 21 22 23 24 - - - - - -
1eo - - - - - - - - - -