Srinagar, June 19 -- What begins as a peaceful outing along the riverbanks often turns dangerous when nature changes its pace without warning. Experienced trekkers familiar with upper-course rivers explain that many accidents happen not because of one single mistake, but due to a chain of natural and human factors acting together. One key reason is the formation of temporary "shelves" along riverbanks. These are created when fast-flowing water erodes and caves in the sides of the river, leaving behind unstable ledges and isolated rocks in midstream. These spots often appear safe from a distance, tempting people to step onto them.Another major factor is the sudden increase in water flow during the afternoon. As temperatures rise, snow in t...