Geotech #17 - Desert Engineering

I've been away from this for over a month.  Since then, there has been virtually no rain.  Under these conditions, you can make a big pile of dirt, and nothing will happen to it.  The cottage got 2 inches of rain the other day, and the ground sucked it up like a sponge, now it looks as dry as ever.  For this to be interesting we need a slug of at least 4 inches.