The Cascade du Chapeau is a waterfall located right next to the Le Chapeau Buvette at the foot of the Mer de Glace glacier. The water from the waterfall comes from the Torrent du Chapeau which meets the Arveyron river near the Source de l'Arveyron a bit lower down in the valley at the mouth of the Arveyron river where it is formed below the Mer de Glace river. We got a nice trail nearby for a visit to the Source de l'Arveyron which is located lower down closer to the valley floor.

You pass the Cascade du Chapeau on your way to the Chapeau snack bar. We got wonderful, family friendly trail that starts in the hamlet of Le Lavancher and visits the cascade, the buvette and moves on to the nearby view point for the Mer de Glace. 

There are warning signs around the waterfall not to stay in that area or approach the waterfall. There is frequent rockfall in the area and as such you should not get of the trail and aim to approach the waterfall for a closer look. From the Chapeau snack bar you can have a bit of a closer look but much of the waterfall is covered by rock from that angle.