The conversation is not working as intended. In fact, if you check the "Recent Messages" list after getting the map, you'll see one saying "Go search around in **** for a treasure chest" or some such.
Trouble is, the message is never actually displayed in conversation. It just loops straight into the "Tell me about this land" conversation string.
Its a minor bug, but I can see how it can be confusing for the new folks.
-Misguided