
Stonedowns were obviously safe, since stone remains unaffected by rain or drought or pestilence or fertility. A tree however, is subject to all of those things, and a Woodhelven is a tree. So how did they survive the SunBane?
Under the rules of the SunBane as we saw them in The Second Chronicles of Thomas Covenant, a tree would grow an an unnatural rate during a Sun of Fertility, become disease ridden during a Sun of Pestilence and then melt away into nothing during a Desert Sun.
We can guess that Stonemight Woodhelven was protected by it's shard of the Illearth Stone, but other Woodhelven should not have survived. Yet the mention of Far Woodhelven, and of the unnamed Woodhelven where Sunder and Hollian learned of the existence of Landsverge Stonedown in White Gold Wielder shows that they continued.
Any thoughts?