Wow, looks like it's an impressive size for a king cobra enclosure. Loads of water too. I don't think I've ever seen housing for a king cobra anywhere near that big - or that wet.
It is indeed big, so too is the King Cobra exhibit at the Zoo Negara in Malaysia; you will find photos of that in the Zoo Negara gallery. Both zoos had big specimens, while I'm more used to smaller specimens in Europe.