In Episode 3, Mark and Sarge explore men's propensity to isolate.  Have you been known to occasionally go dark...to cave up?  If not, perhaps you've had a friend who has been known to do so?  While there are many types of 'man caves', in this episode, we go spelunking to explore three types of caves in particular...the cave of busyness, the cave of apathy and the cave of shame.  We can't thrive in isolation, but rather we were created for connection.