This island was discovered by the great explorer of the khazi peoples named Argumbred od Shokta in the year 87 of the Hollow King Mashtbron dun Yabaktey and he named it UR N'ASHTER after the Hollow King's great daughter, the merciless Blood Princess Ashteru din ya M'ashtbrey.

I couldn't resist, sorry. I like the mountain hatching, but think the hills are maybe a bit too narrow and too obviously divide various river basins.