TJ – sapaudia once of this 'ere parish posted pics of something he called the Lotschberg Sudrampe (the route is actually signposted as the Hohenweg Sudrampe). It looked fantastic so on one of the Stoner Euro trips I tracked it down. Its the old path from Hohtenn to Brig – gently dropping just 1,000 ft down the north side of the rhone valley – not far from Sion. You can start higher up at Lotschburg but its wise to catch the train up there and then ride down, whereas its not to bad climbing the 1,000 ft to Hohtenn station to start from.
You ride along old aquaducts and a disused railway – there's a couple of short hike-a-bikes but it's well worth it.
Also, the thermal spa at Birgerbad is probably the best Ive ever been to. You need to wear a swimming cap and jockeys but the water temperature is blissful and outdoors (although theres a really hot grotto bath too)
Start here
Route guide (from a walking map. Full size scans are here http://www.northmalvern.co.uk/hohtennlrg1.jpg and here http://www.northmalvern.co.uk/hohtennlrg2.jpg )
some pics
Brigerbad http://www.brig-belalp.ch/regionorte/brigerbad/thermalbad.php