Treasure maps in ESO are hand-drawn charts that drop randomly from world content — defeated enemies, looted containers, opened chests — across every major zone in the game. Carry one in inventory, travel to the location it depicts, and a dirt mound appears at the marked spot; dig it, claim the chest beneath, and the map is consumed. Until used, maps are freely tradeable, which is what creates the secondary market this sub-category covers.
Each major zone runs a standard pool of six numbered maps. Starter zones add four more per Alliance, and Cyrodiil carries a deeper eighteen. Most major zones also have a single Collector's Edition variant that only ever entered circulation through the original or a chapter pre-order — those don't farm, which keeps a permanent scarcity layer underneath every CE listing. The tier-2 pages below break the catalog down by zone, each showing its full standard pool plus the CE map where one exists, with current guild trader prices and farming notes on the chest locations.
Where the value lives at this altitude tracks the overland sets the chests drop. A zone whose set cycles into a competitive build window tightens its whole map pool — Alik'r runs hot on Sword-Singer demand, Glenumbra on Hide of the Werewolf, Blackwood on Deadlands Assassin, Galen on the thinnest standard supply in the family. CE maps maintain their own floor regardless of meta. The lower bound on every map is the chest's raw material fill — gold-tier material extracts, Malachite Shards, and zone-specific Antiquity leads that keep otherwise quiet zones moving even when the overland sets cool off.