Tanglegate is an elf gate in the demon-corrupted forest of Tanglebriar. It can be reached via Lichgate, which is the only known example of a working elf gate that links to Tanglebriar. Its portal key is a sapphire.
Treerazer, the lord of Tanglebriar, hopes one day to be able to use Tanglegate against the elves, and so he has ordered his minions to refrain from destroying it. The gate itself is a stone arch covered in moss, and it stands on a rare patch of dry ground in the middle of a stinking bog. 1