Tunnel portals are important scenery details, which most often is bought as a standard item ready made. Then just as often the portal will be somewhat misplaced, unless you´re modelling exactly the region from where the prototype portal has been taken.
This video presents methods and materials needed to make any type of stone arch tunnel portal to fit the scenery you model.
Link to the video tutorial (Youtube):
This video presents methods and materials needed to make any type of stone arch tunnel portal to fit the scenery you model.
Link to the video tutorial (Youtube):