Large Asian Drawing On Paper...Origin?...Signature ID Help?

The image is 18" x 31"

 

Hi, this is Chinese for sure, a traditional landscape painting. I cannot read the signature, but I think the two signs on top of the left column are a cyclical date. It is a bit hard to read, but I think it is the one for 1857, 1917, 1977 and so on. Most likely this would be 1977. Nice painting!
Mat

 

Thank you for your help.

Here is a better pic of the signature.