Secret locations

I saw on Terra arcanum list of all locations in the game,but,there are some places that I've never seen before.How do I gain location of that places???

 

Yeah, I hear ya...

The most obvious answer is to simply find those coordinates on the map, click, and go. You have to tell me a little more about what locations before I could tell you if there is someone youmight want to be talking to first...

 

Well,I found somekind of cave used by thieves.But,I can't enter 'cos it says that hole(door,let's it call)is too small for me to enter.I'm elf and that cave,I think,is supposed to be for gnoumes and halflings!
That is just one example..........

 

Probably the best (and intended) way of getting these locations marked on your map is to repeatedly talk to bartenders. Just keep chatting them up until they don't say anything new.

 

The theives cave gives you a pickpocketting quest. You aren't missing much.

 

Aerial Decapitator

There's another location I found only because of a walkthrough. I think it has a mad monk with a aerial decapitator - quite an incredible piece of equipment. I had to hit the EXACT coordinate - couldn't even just walk by and have it suddenly appear on the map. Where does this quest come from?

 

There is not a quest for this that I know of. I think it is one of the perks that was added for us addicts. The Aerial Decapitor Rules. It is not magikal so a techie can use it. Become a master of Throwing and mow down EVERYTHING!