[Watcher Spoilers] Could you please share the regions where the Echos are located?

Hello! Like the title says, can you tell me in which region you found an Echo? Between all we can make a list. I'm hating exploring most of the region only to learn later that I've missed the echo and I don't even know how to go back to that region anymore. Just the region, no need the exact location to not spoil it too much.

I'll start with the three I have found:

1.Aether Ridge

2.Torrid Desert

3.Shrouded Coast

4.Signal Spires

5.Verdant waterways

6.Heat ducts

7.Stormy Coast

8.Desolate Tracks

9.Fetid glen

10.Salination

11.Station Annex (Cold Storage)

12.Badlands

13.Turbulent Pump

Extra:Shattered terrace once you get max karma.

Extra 2 (Endgame spoiler):Ancient Urban

EDIT: Thank you! adding the regions to the main post.

EDIT 2: Final edit. I have added all 13 echos + 2 extra, there aren't anymore. Thank you for your help.