Belprahon () is a municipality in the Jura bernois administrative district in the canton of Bern in Switzerland. It is located in the French-speaking part of the canton in the Jura mountains. History Belprahon was formerly known by its German name, Tiefenbach, though this name is no longer used. Throughout most of its history, Belprahon was part of the lands of Moutier-Grandval Abbey and the Abbey's college of canons. After the 1797 French victory and the Treaty of Campo Formio, Belprahon became part of the French Département of Mont-Terrible. Three years later, in 1800 it became part of the Département of Haut-Rhin. After Napoleon's defeat and the Congress of Vienna, Belprahon was assigned to the Canton of Bern in 1815. The village was bypassed by the major roads through the Grand Val and so for most of its history was generally rural and agricultural. In the 1960s many commuters moved into the village and by 1990 three-quarters of the working population commuted to jobs in other towns. A majority of the workers who work in the municipality now work in the services sector. It is the only municipality in the Grand Val that is not part of the parish of Grandval. Rather it is part of the Reformed parish of Moutier. Geography Belprahon has an area of . As of 2012, a total of or 39.9% is used for agricultural purposes, while or 52.5% is forested. Of the rest of the land, or 7.3% is settled (buildings or roads) and or 0.5% is unproductive land. During the same year, housing and buildings made up 3.9% and transportation infrastructure made up 2.3%. Out of the forested land, 43.6% of the total land area is heavily forested and 8.9% is covered with orchards or small clusters of trees. Of the agricultural land, 12.5% is used for growing crops and 7.3% is pastures and 19.6% is used for alpine pastures. It is located on the north flank of the Grand Val (valley of Moutier). On 31 December 2009 District de Moutier, the municipality's former district, was dissolved. On the following day, 1 January 2010, it joined the newly created Arrondissement administratif Jura bernois. Coat of arms The blazon of the municipal coat of arms is Per fess Azure a House with pinnacle Argent roofed Gules between two Fir Trees Vert trunked of the third and Argent a Fountain Basin between two Mullets all