Mongo week, otherwise known as mondo or hell week, is the last segment of the RCI curriculum. First week you get in shape (lots of PT and hiking), second week you learn stuff (less PT and hiking, more learning knots, climbing and whatnot) third week is community service (pull up old refrigerators and washing machines from hills and ditches on the side of georgia roads and take them to junkyards) and the fourth week is mongo/mondo/hell week.
during mongo week the groups gets the bare minimum hours of sleep a day (six or seven hours i believe), and hikes virtually non-stop. they are forced to excercize all the skills they learned in the first few weeks, particularly navigation/orienteering, as the instructors usually just give you a checkpoint and tell you to be there by a certain time, then trail a distance behind you while your group finds it's own way. The difficult part about mongo week, which makes it mongo week, is that the group is forced to carry extra weight along with thier packs. this extra weight has in the past included: jugs of water, rocks, a locked coffin full of nutterbutters, a stretcher (sometimes with someone in it), and worst of all, "THE ROPE"........."THE ROPE" is a 150-200lb, 6" thick and 30-40' long ship anchor rope. the members of the group must distribute the weight of the rope evenly amongst themselves. while moving, no part of the rope may touch the ground, if it does, the whole group does PT with their packs on.
Imagine waking up a 6am, having 3min to pack up your stuff and be on your way hiking. then hike about 15 miles up and down mountains, carrying a 50 pound pack, the rope, and occasionally a stretcher or jug of water, untill midnight. then you wake up and do it all over again for another 6 days.