http://news.bbcnewsd73hkzno2ini43t4gblxvycyac5aw4gnv7t2rccijh7745uqd.onion/2/hi/science/nature/4737743.stm
You cannot blame the sheep, because we should rather blame the man Johannes Sveinbjornsson, sheep farmer At first a lot of people blamed the sheep. They're let loose to roam free, all summer long, high in the mountains. This is exactly where the vegetation and the soil is most fragile. Then in late summer, early autumn sheep farmers mount their horses and go, cowboy-like, into the hills, in search of their flocks.