This coal mountain range is described as extending in a south-west direction to the Susquehanna. To the north-east, beyond the Lehigh, it is connected with the Broad Mountain, the first considerable elevation west of the Blue Ridge. The Lehigh from Mauch Chunk to the water gap, eleven miles, winds between rocky mountains, with a brisk current, but presents no falls. The road usually runs near the stream, and sometimes at a considerable elevation above, on the side of the steep mountain. In its passage through the Kittetany, or Blue Ridge, the river has a tranquil but slightly inclined course. On the adjacent elevation, yellow pine, hemlock, and spruce, are interspersed with deciduous trees. From the water gap to the Delaware, the river pursues its course in a deep ravine, seldom with alluvial borders of much extent. In this district of country, the soil generally rests on limestone sinks, indicating caves; and fissures in the rocks are often observed, that must, in some places, render canalling difficult. From the confluence of the Lehigh with the Delaware to tide-water, the descent is one hundred and fifty feet. The village of Mauch Chunk is situated on the western bank of the Lehigh, in a deep romantic ravine, between rocky mountains that rise in some parts precipitously to eight hundred or one thousand feet above the stream. Space was procured for dwellings, by breaking down the adjacent rocks and filling up a part of the ravine of Mauch Chunk Creek. A portion of this stream has been transferred to an elevated railway, and is used to propel a grist-mill. Within a few years the Lehigh Company have erected, and are proprietors of, a large number of dwellings and buildings of every description, including a spacious hotel, a store, furnaces, grist-mills, and several saw-mills: about eight hundred men are employed by the company.[41] Next to Mauch Chunk, Mount Carbon, or Pottsville, as it is now called, situated at the head of the Schuylkill canal, has been the principal source of the supply of anthracite. Many large veins are worked within three miles of the landing; and some have been opened seven miles to the north-east; in the direction of the Lehigh beds. On almost every eminence adjacent to Pottsville, indications of coal are disclosed. The veins generally run in a north-east direction, with an inclination of about forty-five degrees, and are from three to nine feet in thickness; commencing at or near the surface they penetrate to an unknown depth, and can often be traced on hills for a considerable distance, by sounding in a north-east or south-west direction. Some veins have been wrought to the depth of two hundred feet without the necessity of draining; the inclined slate roof shielding them from water.