Switzerland, Ticino, The original cobble surface snaking mountain road from Airolo to St Gottard Pass viewed from the west.

Switzerland, Ticino, The original cobble surface snaking mountain road from Airolo to St Gottard Pass viewed from the west.

Switzerland, Ticino, The original cobble surface snaking mountain road from Airolo to St Gottard Pass viewed from the west.

Switzerland, Ticino, The original cobble surface snaking mountain road from Airolo to St Gottard Pass viewed from the west.

Switzerland, Ticino, The original cobble surface snaking mountain road from Airolo to St Gottard Pass viewed from the west.

Switzerland, Ticino, The original cobble surface snaking mountain road from Airolo to St Gottard Pass viewed from the west.

Switzerland, Ticino, The original cobble surface snaking mountain road from Airolo to St Gottard Pass viewed from the west.

Switzerland, Ticino, The original cobble surface snaking mountain road from Airolo to St Gottard Pass viewed from the west.

Switzerland, Bern, Gadmertal, View west along Upper Gadmertal showing third tunnels on road to Susten Pass. Gadmenflue clifftops against skyline.

Switzerland, Valais, Jungfrau-Aletsch , Aletschhorn with Mittelaletschgletscher spilling down the south face snow and rocks on the Eggishorn in the foreground.

Switzerland, Valais, Jungfrau-Aletsch, Upper Aletschgletscher with from left to right Jungfrau Monch Trugberg and Eiger from Eggishorn.

Switzerland, Valais, Jungfrau-Aletsch, Upper Aletschgletscher with from left to right Jungfrau Monch Trugberg and Eiger from Eggishorn.

Switzerland, Valais, Aletsch Glacier, Grosser Aletschgletscher. View from Eggishorn towards peaks of from left to right Dreieckhorn Jungfrau Monch Trugberg Eiger and Wannenhorn.

Switzerland, Valais, Aletsch Glacier, Grosser Aletschgletscher. View from Eggishorn towards peaks of from left to right Dreieckhorn Jungfrau Monch Trugberg Eiger and Wannenhorn.

Switzerland, Uri, Susten Pass, View up to Susten Pass from near hamlet of Farnigen with the glaciers of Grassengrat Ridge on the skyline against blue sky with high windswept cloud.

Switzerland, Ticino, St Gotthard Pass, Monument to mountain guides who aided travellers across the high passes depicting figure leading horse and rider. Sheer rocky mountainside behind.

Switzerland, Ticino, Village of Ponto Valentino at foot of tree covered hillside with winter feed for cattle cut and drying in the sun in foreground.

Switzerland, Ticino , Dotra, Scattered settlement of Dotra with snow glacier of Rheinwaldhorn mountain beyond 3402 metres.

Switzerland, Ticino , Dotra, Scattered settlement of Dotra with snow glacier of Rheinwaldhorn mountain beyond 3402 metres.

Switzerland, Meiental, East side of Susten Pass across steep mountainside with peaks of Sustenspitz at 2930 metres in centre and Chli Sustenhorn at 3309 metres centre left.

Switzerland, Luzern, River Reuss crossed by covered wooden footbridge Kapellbruche with Wasserturm on left and Jesuiten Kirche behind. Seen from Seebrucke.

Switzerland, Luzern, River Reuss crossed by covered wooden footbridge Kapellbruche with Wasserturm on left and Jesuiten Kirche behind. Seen from Seebrucke.

Switzerland, Bern, Grimselsee, Glacial lake viewed from the east above the Grimsel Pass. Peak of Finsteraarhorn partly covered in snow at centre on skyline 4274 metres.

Switzerland, Bern, Grimselsee, Glacial lake viewed from the east above the Grimsel Pass. Peak of Finsteraarhorn partly covered in snow at centre on skyline 4274 metres.