Complex sentence: On 17th August 1995, following 70mm of rainfall in just 2.5 hours, the village of Imlil was inundated as a six metre high wall of water washed down the surrounding valleys.
Split into simpler sentences: On 17th August 1995, following 70mm of rainfall in just 2.5 hours, the village of Imlil was catastrophically flooded. A six metre high wall of water washed down the surrounding valleys.