From A Wiki of Ice and Fire
and the location of Wyl
Wyl is the seat of House Wyl in Dorne. It is located east of the Boneway at the mouth of the Wyl river at the Sea of Dorne.
The Wyls have long fought against the lords of the Dornish Marches to the north. The family has tunneled beneath their castle to link caverns for greater defense.
References and Notes