Solivagant:
this connection should relate to some particular merit of the natural aspects of the granite at the site
I think a lot of connections need more specific requirements. When proposing connections it seems many (myself included) often forget to add specific rules. I am not speaking specifically of the
Granite Rock Formation connection, but concerning many connections that could be interpreted to include sites that were never meant to be included. One example of a connection that benifits from specific requirements is the connection
Offshore of major city, which is a far more interesting connection when information relating to ferry/boat travel is included. Furthermore, I would agree with Solivigant that highlighting unique sites containing granite formations is more worthwile than any typical site.
Though I would argue Mt. Namsan's granite formations are special in the fact that they are essential to the development of Mt. Namsan as such a hub of Buddhist art and sculpture. The numerous large exposed boulders and natural walls allowed Silla architects to have a perfect canvas for their craft. The amount of granite quarried and used is exceptional. To speak of the remains (though not all granite, likely a majority) there are 122 temples (almost univerally ruins), 53 stone statues, 64 pagodas, and sixteen stone lanterns. This incredible number of important sites within the mountain that have been utilized from the unique natural environment of Mt. Namsan, enabled the Silla people to create a Buddhist paradise that has stood for over 1000 years. Nevertheless, if the requirement of the connection is entirely natural this would likely exlude Mt. Namsan.