Mitchell Klein brings us this unearthly mummy found at a sideshow appreciation event.
Based on the picture alone I would guess this is a vintage-style paper mache gaff. The classic technique used layers of wet paper saturated with adhesive over a basic skeletal armature. In the old days carnies would use discarded newspapers and flour to create the mache mixture, but these days simple white or carpenters glue provide a better, mold-resistant alternative. As the paper dries, a process that can take a considerable amount of time, it produces a characteristic wrinkling effect that recreates the look of mummified skin and flesh.