Several adventurous hikes begin at a viewpoint on the River Semois near the village of Rochehaut.
The starting point is high above a bend in the river looking down on the village of Frahan. A steep path leads down to the river, where a footbridge built in 1924 takes you across to the village.
The rustic café La Passerelle next to the bridge is a friendly spot to stop for coffee and homemade cake.
Walk number 1 from Frahan climbs the steep wooden hill behind the church to reach a ridge high above the river.
Here you see several strange rock formations along with scattered remains of a thirteenth-century castle.
The trail returns to Frahan along the river, but there are other paths you can follow to reach more remote spots.
Derek Blyth’s hidden secret of the day: Derek Blyth is the author of the bestselling “The 500 Hidden Secrets of Belgium”. He picks out one of his favourite hidden secrets for The Brussels Times every day.