The following is a list of the top 10 visited letterboxes.
Cronk Keeill Abban
Cronk Keeill Abban is one of three ancient mound sites found on the Island where Tynwald Parliament was held. An open-air ceremony of the Islands freemen gathered here to proclaim all the new laws.
The present Tynwald Hill is at St. Johns where the ancient ceremony of proclamation is still enacted on each Tynwald Day - 5th July.
Visited 23 times.
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Black Hut
A well-known landmark on the famous TT motorcycle mountain course. The old roadside store hut was originally black but is now a stone building used as a control point for the races.
Visited 15 times.
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Cleigh Yn Arragh
The Cross Dyke earthworks at Cleigh yn Arragh forms part of an ancient defensive rampart and ditch controlling the hill-route between two streams. It is probably iron age and from the first Millenium AD. There is a plaque on a stone pillar (at OS grid reference 383 885) standing by the earthworks near the road to Tholt-y-Will.
Visited 14 times.
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Carraghan - Tumuli
These archeological remains are to be found on the lower slopes of Carraghan and above the Injebreck Resevoir in the West Baldwin valley.
Although shown on some maps as Shielings, or hut circles, the earthworks are thought to be Tumuli, or burial mounds, most probably of Viking origin and dating from the 10th Century.
Visited 14 times.
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10 Peaks - Beinn-y-Phott
A Ten Peaks Letterbox, neatly hidden on the slopes of Beinn-y-Phott. A fabulous view of the Baldwin valley can be admired from this position. The summit can easily be reached in a short gentle climb, by parking at the layby on the Brandywell road, just after the cattlegrid.
Visited 14 times.
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Sloc Shielings
The Sloc is one of the steepest climbs on the Island and is a popular route for car hill-climbs. The surrounding area is known as "Heather Hills" because of its distinctive purple colour in summer. Remains of hut circles or "Shielings" can be found close by.
Visited 13 times.
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Watertrough Cottage
Watertrough Cottage in South Barrule plantation is a cosy bunkhouse managed by 2nd Onchan Scout Group. Easily visible from the Round Table road, the bunkhouse provides both cooking and sleeping facilities but has no electricity.
Visited 13 times.
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Sheepfold
A fine example of a circular sheepfold can be found on the lower slopes of Snaefell, just below the road from The Bugalow to Tholt-y-Will. It is best viewed from the slopes of Beinn-y-Phott, from the opposite bank of the infant Sulby River. The letterbox is however located on the lower slopes of the sheepfold side of the valley.
Visited 13 times.
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Block Eary Shielings
The shielings, or hut circles, are situated above the steep valley of Block Eary. Some are no more than mounds of earth, the remains of ancient Manx shepherds summer houses.
Visited 13 times.
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Sulby River - Miners Pack Horse Bridge
An old stone-arched bridge across the Sulby River near its source. It was built and used by the Beinn-y-Phott miners in the mid-nineteenth century. It now carries the Millennium Way over the river.
Visited 13 times.
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