On the facade is a series of large cubical columns. The extreme columns are unfinished, this gives you an idea of the manner in which the columns are excavated and finished.
Also at a corner is an unfinished chamber. The opening is cut neatly in rectangular shape, but inside is not excavated fully. Again this can give a good idea of how those chambers were outlined and executed.
The doorframe is interestingly carved. Next to the cave is a series of steps that give avccess to the cavelocated slightly above the Cave 5
By the way the Cave 5 belongs to the later phase of excavations.