This is a gallery of the missing. DANA Desaparecidos is a social media effort to find those still unaccounted for in the devastating flash floods that swept through eastern Spain. At least 217 people are confirmed dead and the toll may climb higher.

Emergency workers continued the search for victims of last week’s flash floods, while a national debate raged over who was to blame for the catastrophe.

Climate change helps explains why the storms and floods were so extreme. But questions have emerged about whether communication failures contributed to the toll.