Beaghmore Stone Circles are located 8.5 miles north-west of Cookstown County Tyrone, on the south-east perimeter of the Sperrin Mountains. The site consists of seven low stone circles of different sizes and ten stone rows. All but one of the stone circles occur in pairs. The singular circle can be distinguished from the paired circles by its slightly larger stones forming the circle. The interior is filled with more than 800 small stones which have been placed upright within the circle and are referred to as 'the dragon's teeth'. Most of the circles have small stone alignments touching them at a tangent. Each of the three pairs of stone circles also has a small cairn placed in between them. The site probably marked a focal point for religious and/or social gatherings. Some archaeologists believe that the circles have been constructed in relation to the rising of the sun at the solstice, or to record the movements of the sun and moon acting as observatories for particular lunar, solar or stellar events. Three of the stone rows point to the sunrise at the time of the solstice and another is aligned towards moonrise at the same period. However, most of the remains at Beaghmore do not indicate very accurate alignments upon specific astronomical features.