This model is so spesific sample about subway and railway tunnel. It is tileable and rotatable tunnel. It is modelled 3ds Max We didnt write polygon numbers because it's so variable, long or short. For 3ds Max format, it hasnt big data polygon. Program shows me 50000 polygons. But model made spline geometry This model is rigged but you may not make tunnel animation with this model. (if you are better on 3ds Max, you can :) ) Bcs so many function there is for make animation. You can create unlimited 3d tunnel model with its control pannel. I hope; i explain what i want to say. Its rigged for create several different shape tunnel.

MAX file revised for spline sensitive and close/open all cloner. For easy use while adjust tunnel. You can adjust spline sensitive with rasinge or lovering. They arent rigged and animated. Linear. Even you may want different shape from photos or you draw new line. But if you want so long tunnel for converted format its file size will be so big. Thanks for interesting