The Nevado del Ruiz volcano of Colombia began erupting:on Nov.13,1985 after rum- bling for 6 months,and the disaster due to the eruption caused vast damage and casualties.

• 1985年11月13日哥伦比亚的内瓦多德尔鲁伊兹火山在隆隆作响6个月之久后开始喷发,这场灾害造成了巨大破坏和人员伤亡。