The Drift Stones, also known as the Triganeeris Sisters or simply the Sisters, are a pair of Bronze Age standing stones near Higher Drift, a few miles west of Penzance. They stand in a field just off the A30 and are visible from the roadside. The stones measure about 2.7 metres and 2.3 metres high and are set around 5.5 metres apart. Their position gives views across the surrounding farmland, with St Buryan church tower visible to the south west. The larger stone, which stands farther from the road, has often been said to resemble an old woman wearing a cloak. This appearance has helped shape the folklore attached to the site. Like many Cornish standing stones, the Drift Stones are linked with tales of people turned to stone. These stories often describe women transformed as punishment for dancing, playing, or breaking the Sabbath, giving older prehistoric monuments a later moral explanation. The stones were excavated by W. C. Borlase in 1871. He found a pit between them, slightly north of centre, but recorded no finds from it. Despite the lack of dating evidence from the excavation, the Drift Stones are usually interpreted by comparison with similar stone pairs as Middle Bronze Age monuments, probably dating to around 1500 to 1000 BCE. Their pairing, spacing, and setting suggest that they formed part of the wider ceremonial landscape of West Penwith. The name Triganeeris has attracted several interpretations. Payne, in Romance of the Stones, suggested that it might have a farming origin connected with pigs, or possibly a linguistic connection with Welsh meaning a place to dwell or a place to die. The stones are also sometimes linked in folklore with the Blind Fiddler, or Tregonebris Longstone, which stands about half a mile to the west. In this tradition, the fiddler is the musician while the Sisters are the dancers turned to stone. The nearest ancient site is the Tresvennack Pillar, which stands about a quarter of a mile to the south east, across the Lamorna Valley. It is possible that these sites were once intervisible or understood as part of the same prehistoric landscape. There is no official public right of way to the Drift Stones, and they stand on private land, so they should be viewed with care and respect. They can usually be seen clearly from the roadside, making them one of the more accessible standing stone pairs in the Boscawen Un area.