This is what the whole entrance looks like. You can see the rats crawling up the supports of the canopy over the doors. But also have a look at the heads of various creatures holding the rods for the rest of the canopy and then much higher up two figures, one on each side of the entrance.
Those figures are wonderfully detailled and look a bit Assyrian to me. The one on the left is clutching a globe.
The other one is holding a sea creature.