Behind that waterfall lies one of the most mysterious and intriguing leads in OFD - the Sandinista Series, one of the few passages on the true left bank of the streamway, heading into blank mountain: an old phreas currently blocked with soft sand some way from the top of a 15m pitch. Unfortunately getting into it requires an awkward squeeze. I found it easy on the way in when I did it a little while ago, but on the way out I caught my rib cage on a projection and cracked a rib. Ouch. For several weeks.