Tunneling

[NJHunkguy]

Originally Posted by Byron

(tris coming on I see)

OH! That means triceps? Didn't know!

I also thanks Byron for mentioning "subsurface fissures". I was only a tourist to the Rockies. I didn't know much of its geology, only knew the popular tourist spots. Just after you mentioned "subsurface fissures", I then had the interest of knowing more about it by searching on the internet.