É um mapa excepcionalmente bom.
Sério, nenhum outro mapa dessa qualidade existe. (A geografia de Chult foi reorganizada durante a Spellplague e seu interior notoriamente difícil de navegar ainda não foi amplamente reexplorado e mapeado.) Aqui estão algumas maneiras que conhecemos.
Syndra diz isso:
Mapping [Chult] has always been nigh impossible, and nothing is known about the region's current geography beyond a few miles from the coast. ("Starting the Adventure," p.8)
E os outros também:
Lerek Dashlynd... offers to trade a sailing ship for an accurate map of Chult that shows the exact location of the ruins of Nangalore and Orolunga. ("Side Quests," p.17)
Because of his dealings with explorers, Jobal has an intense interest in maps of Chult. He would pay the characters handsomely for Syndra Silvane's map, if he learns of its existence. If they refuse to sell, he'll resort to theft, and eventually to murder. ("City Denizens," p.26)
[Valindra's] bookcases are filled with books, scrolls, tablets, and maps, all about Chult in one way or another. They cover history, geography, culture, and natural philosophy in great depth, but all of them predate the Spellplague. Valindra would literally kill to possess Syndra Silvane's map, if she learns of its existence. ("Heart of Ubtao," p.60)