Correct. Supposedly to the closest chamber. I haven't looked into it any but I assume there is only one chamber per map region. I do know all maps given by one villager will point to the same chamber. I guess a way to test the spacing is to compare maps from two, or more villagers spawned in the same area. That will be next.
If I put a traded up villager in a boat and sail them to a new location, will they give me a different map? Or will it always be the same map? I spawned two and traded them up in the same place and moved one to a new location. They each gave me a different map, but maybe they would have even without taking one for a boat ride.
This is from the Minecraft wiki... "Trial chambers can be located using trial explorer maps, which are sold by journeyman-level cartographer villagers for 12 emeralds and a compass. The maps always point to the nearest trial chamber relative to the cartographer that does not already have a trial explorer map that points to it. " Also, even if the villager is moved it will always point to the same chamber. Thank you for training two at once. I was going to test that out but the chamber I'm currently working is large so I haven't needed to train another villager.
I've been using a diff of 5 when killing the mobs in the chambers. Would a higher diff give me better loot, more keys, from the spawner after killing all the mobs?
Higher difficulty can improve drops. Keys I don't think would get more since it's a possible reward simple from killing all the mobs.
Yeah, the two I trained at once were basically side by side and each gave a different map - one close by and the other quite far away. I've been just on difficulty 1 (I'm a wimp ) and my loot from spawners and vaults has been quite good.
