 (Unfortunately, the vaulting techniques of the Pagan era were lost in the later periods.Only much smaller "gu" style temples were built after Pagan.In the 18th century, for example, King Bodawpaya attempted to build the Mingun Pagoda, in the form of spacious vaulted chambered temple but failed as craftsmen and masons of the later era had lost the knowledge of vaulting and keystone arching to reproduce the spacious interior space of the Pagan hollow temples.)