I went on a tour to the southern most city in the world. There is a lake on a fault line of the Andies. The lake sometimes will be colored like a confluence. The unstable conditions don’t sustain fish of I remember correct. The native people there may be instinct with no hope in that there was one elderly woman left 5 years ago. Another problem is the beaver population. The overgrown rodent was introduced into a ecosystem with no natural preditors and cause many problems. The place is certainly exceptional. I still have a very small rock that I plucked from ocean on the continents southern most point on the mainland. It has changed color over time also. Please let me know what you may know about there places if you research them. I’m inspired to do some research myself and hope my memory served me correct.