Hello Jbot,
This the only photo i got, i will try to contact a friend of mind, may i will get clear shots !
I have to tell you this map was found in a very old cave after digging 4 meter .
Tell me more about your idea for cleaning, what stuff do i have to use, i am afraid if i clean it with wrong material i will destroy it , coz this map have more than 20 signs and symbols that might indicate to a treasure ....
Looking forward