This area is called Red Rocks. The area is located on the River Darwen. It should be a pleasant walk from the Roach Bridge Mill. This Earthcache was designed to show you the waterfalls which occur here at Red Rocks. The area is known as Red Rocks due it being primarily sandstone. There are 2 waterfalls which are eroding the sandstone. Sandstone is a sedimentary rock composed mainly of sand-size mineral or rock grains. Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any color, but the most common colors are tan, brown, yellow, red, gray and white. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions.
In this area, the sandstone is primarily more orange due to the higher iron concentration in the soil. The primary sandstone type of this area is arkoses, which are more than 25% feldspar. This sandstone is common in the South and West of England. In this local area, some of it was used in the construction of the nearby Roach Mill (see waypoint). The sandstone in this area would have been formed in the Carboniferous period, a long time ago in the Earth's history.
The River Darwen is a river running through Darwen and Blackburn in Lancashire. The River was seriously polluted with human and industrial effluent during the Industrial Revolution, up to the early 1970s. The River often changed colour dramatically as a result of paper and paint mills routinely using river water to flush out dye and paint tanks. This has now ceased and the river is relatively clear with the return of trout and small fish. Rising in Jack's Key Clough at the confluence of two streams from Bull Hill and Cranberry Moss, the river flows through the town of Darwen, continuing into the suburbs of Blackburn past Ewood Park. The river passes below the Leeds and Liverpool Canal at Ewood Aqueduct and is culverted again at Waterfall and near Griffin Park. It is joined by the River Blakewater near Witton Country Park in Blackburn and leaves the mostly urban landscapes of the towns behind, flowing through parklands and valleys.
A further tributary, the River Roddlesworth, joins the Darwen at the bottom of Moulden Brow on the boundary between Blackburn with Darwen and Chorley Borough Council (the name Moulden Brow being associated with Moulden Water, an alternative name for this stretch of the river). From there, the Darwen flows past Hoghton Tower through Hoghton Bottoms and Samlesbury Bottoms, finally combining with the River Ribble at Walton-le-Dale. At Walton-le-Dale, the river was the backdrop to the battle of Preston during the Second English Civil War, a Parliamentarian victory immortalised in John Milton's poem "To Cromwell": -
In order to claim this earthcahce please undertake the following tasks.
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1) How many waterfalls can you see?
Its actually zero now 
3) Estimate the height of the bank..
4) Name two sub periods of the Carboniferous era.
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