Flotterstone. Old Filter beds Traditional Cache
Wee Clique: We can no longer maintain this cache
Flotterstone. Old Filter beds
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Difficulty:
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Terrain:
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Size: 
(small)
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Park at Flotterstone Car Park. Walk along the path to a sign directing you to the Old Filter Beds. After you walk past the filter Beds, the path will take you to a fantastic Waterfall, well worth the little effort getting there.
History of Filter Beds
Glencorse Reservoir, now the property of Scottish Water, was built between 1820 and 1824 by James Jardine to provide water for the mills of Auchendinny, Milton Bridge and Glencorse, and to supply drinking water to the citizens of Edinburgh when the Megget Reservoir and Talla Reservoir are low. Glencorse also has inlet points from both of these reservoirs. Glencorse Reservoir is retained by an earth dam, the earthern dam (`bank') measures up to 77ft (23.5m) in height and 86,335cu yds (66,005 cu m) in volume. In 1852-3, three filter beds were installed at Glencorse, the engineer being Mr James Leslie. Each measures 92ft (28m) square, and together they can filter 3,800,000 gallons (17, 272 cu m) a day. In each case, the ground was excavated or made up, according to circumstances, to a depth of 12ft 6ins (11.4m), the bottoms and sides been 3ins (76mm) thickness of carefully-washed sand. Above this layer there is a layer of coarser gravel between 1ft 6ins (1.38m) and 3ft 6ins (1.07m) deep, the upper surface being formed in ridges and furrows. Above this, there are a 6in (152mm) thick layer of fine sand, a superimposed layer of seashells of the same thickness, and a further layer of coarse sand above this. The uppermost layer is formed of 1ft 6ins (1.38m) thickness of the finest sand; this layer requires periodic cleaning. A drain of dry mason-work passes down the whole length of the beds to carry off the filtered water. Remember, though, that the glen did not always look as it does today – submerged below the waters of the Reservoir are the ruins of the 13th-century St Catherine's Chapel, which is occasionally visible during periods of drought
This small Cylinder shape cache contains:
Pencil
Log Sheet
Sharpner
Cufflinks
Candle
FTF Badge
Key Ring
TB, (Pentland Pisces)
Additional Hints
(Decrypt)
Onfr bs Gerr