The two largest glaciers of the Folgefond are the Buar Brae, near Odda, and the Bondhus Brae, near Sundal, and to spend a day at either of them is a real treat. But it is not wise to visit these glaciers without someone who knows them, for one might easily fall into one of the great fissures in the ice, known as crevasses, especially if lately-fallen snow had hidden the opening of the mighty crack. A glacier, as most people know (now that everyone goes to Switzerland, if not to Norway), is nothing more than a river of ice; not a nice, clean, smooth sheet of ice, but a rough mass of frozen billows, almost blue in colour, and generally covered with sand, dust, and stones of all sizes. Wherever, beneath the edge of a snowfield, the country shapes itself into a valley, there you will find a glacier. If you make a snowball, and keep pressing and kneading it in your hands, you will soon convert it into a solid lump of ice. That is just what the sun does to the snowfield. It keeps melting the new snow, and this presses down into the old snow, so that the weight of the whole thing squeezes out the frozen snow into the valleys in the form of glaciers. And, as this process goes on year after year, the glacier would naturally keep going lower and lower down into the valley were it not for the fact that the point (or snout, as it is termed) of the glacier very frequently breaks off, and disappears into the torrent of ice-water which flows away from it. So some glaciers, although always moving, never grow any longer, but others creep a little bit farther down each year. There are many other interesting things about a glacier. One of them is the moraine, which consists of heaps of rocks and stones broken off from the edges of the valley by the great river of ice as it pushes its way imperceptibly forward. These rocks are embedded in the ice or borne on its surface, and are only given up when the extremity of the glacier melts away into the torrent. Some of the rocks thus transported are of immense weight, and the torrent is powerless to move them; year by year, therefore, the jumbled heap of boulders and rocks is added to until it often grows to an enormous size. Another fine snowfield in the Hardanger district is the Joekul, a splendid white dome, whose melting snows help to swell the Voeringfos. The Joekul does not possess many large glaciers, but one of them has, in past years, been a great source of trouble to the people who live near it. This is the Rembesdal glacier, at the far end of the Simodal Valley, near Eidfjord.