Just a week ago I downloaded Elodea on my off line DRIZZLE shard. Wow, what a refreshing new age! I haven't visited the DRIZZLE version of URU in a while, but since I was introducing my grandson to the Myst series I happened to go to this version and notice Elodea.
Long story short. We played through and found all 7 of the flags and were having some trouble getting to the next level so I cheated and jumped about 100 ft and landed in what I have found out to be Schatzkammern. We found a book there that suggested going back to the mainland section and finding a key behind a secret door. I went back and found the door and the hidden button to open it. Inside is the giant rotating emerald and a stone key in front of a picture. I tried to take the key but it doesn't seem to be something you can pick up, looks kind of big to carry around

Now the actual question, does the game remember that I found it for later use in opening doors in later ages? I didn't find anything to click on.
Oh yes, in researching the game at this site, I found out how to set up a book on my shelf that allows direct link to the age I'm playing, I also realized I needed to do Unterwelt and Tunnelgang before Schatzkammern which I will do even though I have explored much of Schatzkammern.
It's in my nature to walk on the ridges of mountains, do jumps, and skydive in these games. I just love this new age and am amazed at the amount of work put into it. The developers have put new life into this game. This age has developed a new excitement in me, it would be real neat if someone from Cyan would pick up on this and aid with the graphics. That's not a criticism of the age, just an observation. Given a choice I'll take the content over pretty pictures.
Thanks,
Fred