Thornwood

Thornwood was a forest on the Lake of Steam. As of 1372 DR it was inhabited by evil humanoids and at least one beholder. There was a legend that every ten years, in a particular grove in the forest, the Green's Sword would sprout and could be claimed by anyone using it to fight evil.

By 1369 DR, the Twisted Rune had placed a magical gate in the forest to allow for instantaneous movement to other locations.

The River Minta flows through it from the Erlakazar(?) and to the Lake of Steam (and it follows through out to the Shining Sea).

[Not official, however, it is speculated that elves who live there use giant spiders for their web and spin it into silk, as it naturally has a golden tint to it.]