OS grid reference- SW 728300
Piskey's Hall, otherwise known as Fairy's Fogou or Trewardreva Fogou, is one of the Lizard's best-known monuments. It is situated at Trewardreva about 1 km to the north of the vilage of Constantine. The name derives from the Cornish word for pixie 'Piskey'.
The monument dates to the Iron Age and lies in a field east of the Gweek to Penryn road opposite the entrance to Trewardreva House.
The original entrance to the fogou is not certain, but would probably have been a narrow creepway passage. The present entrance is now the opened south west end of the passage.
The entrance is capped by a huge roofstone which is flanked by two portal stones, which are modern additions. At one end is a round pit cut out of the rock floor which was discovered full of ashes. Iron Age pottery and slag were also found in the passage.
Local folktale relates of farmhands fleeing the field in sheer terror after hearing strange noises emanating from the depths of the fogou, who felt certain they had overheard the voices of angry piskeys.