While it used to be possible to cross the Aletsch Glacier from Belalp to Riederalp, this is no longer possible today due to glacier retreat. The suspension bridge built in 2008 re-establishes this old connection; all in co-operation with Pro Natura, the WWF and the UNESCO World Heritage Swiss Alps Jungfrau-Aletsch.
Further information about the hike can be found here: Belalp-Riederalp suspension bridge