Ah! I am so jealous! Did you visit Yagodina Cave? I thought it had some pretty amazing formations. And from what I remember there was an alter inside where people get married. The tour guide told us that out of the 100 something marriages performed there; there hasn't been a single divorce. Must be a magic cave! 

Looks like you had lots of fun in Southern BG. It definitely holds a special place in my heart.