From Voe to Hillswick fifteen miles of bridle road were made, and two substantial stone bridges thrown over deep and rapid burns. The ground was very difficult, and in many places the red granite was so hard that blasting the rock was necessarily resorted to. This road passed through part of the parish of Delting, connecting it with North Mavine by a narrow isthmus about sixty yards wide from sea to sea. On the south of this the hills rose to a height of about 700 feet above the level of the sea, and terminated on the shore in very high precipitous cliffs. To surmount such a barrier with anything like tolerable gradients, it would have been necessary to make a detour of at least one mile and three-quarters over uneven and rough ground. To obviate this, a road was cut along the base of the bold cliffs of Cliva for 590 yards, which, considering the description of labour employed, was an undertaking of no ordinary kind. The method adopted was to blast the face of the cliff, in which only 250 lbs. of powder were expended, and this removed more than 10,000 tons of rock. With the dislodged fragments a retaining wall was built, which formed a rampart of thirteen feet broad and twelve feet average height. Some of the stones used in the wall were two tons weight.[93] Corporal Andrew Ramsay was intrusted with the execution of the work, and the fact that 1,700 blasts had been fired by him among a people unused to these operations, and without a single accident occurring, affords sufficient proof of his caution, discretion, and attention.[94]