About this 3D model

I found this nice model of an Assyrian relief but it wasn't solid and printable so I worked on it to make it manifold. It was quite some work but the result is satisfying. It is a stone relief at the Museum of Fine Arts in Boston. The original was here: http://www.123dapp.com/catch/Assyrian-Relief/3894234 but Autodesk removed all files and the 123D Catch program for some reason. http://www.3dwp.nl