 Entry to the exhibition can only be gained through the gaping jaws of a 30-metre-long model crocodile.Just inside the croc-mouth, an animated Egyptian mummy urges visitors through to the Lost World of Reptiles.Upon entering the spacious recreation of Kom Ombo, awe-struck visitors are confronted by the five-metre-tall crocodile god Sobek, guardian of the pharaohs and ambassador of the reptile kingdom.