Tre Cime is made by Real Earth X, a team that includes the famous (at least in our circles) Frank Dainese. This is payware and is being distributed by FSaddon. I bought it from them, but I believe you can also find it on Simmarket. The great thing about Real Earth X is that when they create a mountain like that, it's not a photoreal scenery of the mountain glued on to an updated mesh, it is an actual 3D object and that's the reason why it looks so great. If you like Tre Cime, you definitely want to check out my earlier post about the Matterhorn:
http://205.252.250.26/cgi-bin/yabb2/YaB ... 1311781277