Carrowkeel

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Heapstown Cairn
54.095074
-8.348320
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Heapstown is estimated to measure 63 m in diameter, the largest monument in a region ... From the top of Heapstown Cairn there is a fine view of the Bricklieve Mountains with several of the Cairns silhouetted against the skyline. http://www.carrowkeel.com/sites/moytura/heap1.html
Heapstown Cairn by Lough Arrow, said to be the fourth largest cairn in Ireland. http://www.carrowkeel.com/sites/moytura/jpegs/heapstown.jpg http://www.carrowkeel.com/files/main.html
Panoramio

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Carrowkeel Cairn G
54.056123
-8.377398
302m
Possibly the most exciting feature is the roofbox and midsummer sunset alignment ... The diameter of the cairn is given as 21 metres.
Astronomy at Cairn G
The entrance of Cairn G incorporates a structure known as a roofbox. The only other example currently known in Ireland is the famous Newgrange example which is aligned to the winter solstice sunrise. Another was found last year at Crantit on the Orkney Islands which have abour 80 chambered cairns. The Carrowkeel example has several features in common with the one at Newgrange. It is located over the entrance to the chamber; a stone door is present; and the roofbox admits a beam of light from the sun at sunset over midsummer.
... The main axis of the cairn and chamber is aligned to the left edge of Knocknarea with the Great Cairn on its summit. This is a similar axis to Cairns B, E and K, and is approximately the position of the northern extreme setting midwinter full moon.
http://www.carrowkeel.com/sites/carrowkeel/cairng2.html
Panoramio

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Carrowkeel Cairn H
54.055467
-8.377573
297
Cairn H is, like most of the other cairns about 20 metres in diameter. http://www.carrowkeel.com/sites/carrowkeel/cairnh1.html
Cairn H is aligned to the sunsets sometime between the equinoxes and the summer solstice and is probably aligned to the setting of one of the minor lunar standstills.
Panoramio

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Carrowkeel Cairn K
292
Cairns G and K are very fine with interesting cruciform chambers and double-lintelled entrances.
Cairn K, the highest point on Carrowkeel Mountain ... 8 meter long passage opens into a beautiful cruciform chamber which is orented to Queen Maeve's cairn on Knocknarea.
http://www.carrowkeel.com/sites/carrowkeel/cairnk.html
It has a diameter of 21 meters and is about 6 meters high, and is surrounded by a layer of bog which has covered any kerbstones which might surround the base of the cairn. The passage is 7 meters long and leads into a cruciform chamber with a beautiful corbelled ceiling 3 meters high. The passage and axis of the chamber is oriented to Queen Maeve's Cairn on the summit of Knocknarea, as are Cairns E, G and B. The summits of both Maeve's Cairn and Cairn K are at the same altitude.

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Kesh Corann
Cairn and Enclosure atop mountain.

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Cairnaweeleen
http://www.carrowkeel.com/sites/carrowkeel/cairnan.html

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Lough Arrow Neolithic Sites