More than 350 people are dead, and over 1,300 remain missing, after a massive wall of water, mud and debris crashed through a Himalayan river valley on the border of Nepal and Tibet. It’s the region’s worst disaster since a devastating earthquake over a decade ago. The mudslide swept through the Lhende Khola river valley just after 8:30 a.m. on Wednesday, washing away homes and burying entire villages. Water levels along the river at one point rose by as much as 27 feet over half an hour. This is Subina Tamang, whose husband remains missing.

Subina Tamang: “In our last conversation at 7:30, he said he was sending two kilos of walnuts and two kilos of chocolates for the children. He also sent some instant noodles for them. And he said he would be coming soon, but he didn’t. … All I want is for my husband to come back to me safely in one piece. I don’t want anything else.”

Hundreds of foreign tourists are among the missing. The mudslide washed away at least 19 bridges, complicating rescue efforts. The disaster was triggered by a 2,000-foot-long chunk of ice that broke from a glacier high in the Himalayas. Climate scientists warn the region is warming much faster than the global average, leading to the rapid retreat of glaciers. Nepal has lost nearly a third of its total ice volume over the last three decades.