From A Wiki of Ice and Fire
The Talking Trees, of Tall Trees Town on the island of Walano in the Summer Isles, are enormous tower trees that shade the town. On their trunks, priestesses in feathered robes carve songs and stories. The entire history of the Summer Islanders is carved onto the Talking Trees, as well as their laws and their gods' commandments. The earliest maps of the Summer Islanders can be seen on the Talking Trees, and show no lands but the isles themselves, surrounded by a vast world-spanning ocean.
- ↑ The World of Ice & Fire, Beyond the Free Cities: The Summer Isles.