Ram at a water spout just below Namche. I'd run out of water, so I filled my bottle here and added what I thought was a chlorine dioxide purification tablet. I realised later I had actually added only a neutralising tablet, designed to take away the chorine taste after purification. Luckily I didn't drink any of this water, or I could have made myself very ill indeed.
From Nepal and Everest Base Camp, Jul-Aug 2010