Does anyone know?

I just wanted to take a few minutes to update you on this:

I finally was able to find the answers to both riddles and was also successful in decoding and solving the 'final' cipher and obtain the coordinates to the cache!

I actually found the answer to the first riddle when I decrypted what was provided in cipher text as the "second riddle." Because this was a basic vigenere cipher I was able to solve that using a 'brute-force' solve via the DCODE vigenere solver... and in addition to decoding the cipher, the keyword to the cipher - which doubles as the answer to the riddle - was provided. The keyword/answer was "asleep." (Between you and me, I don't really feel that the word asleep "fits" as the correct answer to the first riddle... but it is the keyword that encrypted and subsequently decrypted the second riddle. And so that is that~)

I wasn't able to continue until I settled on the word "nothing" as the answer to the decrypted Second Riddle. Personally, I was much more satisfied with that answer, as "nothing" actually SOUNDS LIKE the correct answer to that riddle! But my issues were still not solved, as I still did not know what to do with the words I had (asleep and nothing) and the still-encrypted Final Solution.

I finally solved everything when I reached out to another cacher who had already found this cache and requested his assistance. I told him of the progress I had made... and where I was still stuck. And he was generous enough to explain to me that the Final Solution cipher was double-encrypted and therefore, much harder to decrypt! He also pointed me to a different cipher website - Rumkin - that had a decrypting tool that would serve me better in doing the final decrypt.

I then visited that website, found the tool he had referred me to, and used "asleep" as the alphabet keyword and "nothing" as the passphrase, and decrypted the Final Solution cipher!!

Thanks for weighing in on my original post and chatting back & forth. I appreciate it!!