The Sudarium of Oviedo, or Shroud of Oviedo, is a bloodstained piece of cloth measuring c. 84 x 53 cm (33 x 21 inches) kept in the Cámara Santa of the Cathedral of San Salvador, Oviedo, Spain.[1] The Sudarium (Latin for sweat cloth) is thought to be the cloth that was wrapped around the head of Jesus Christ after he died as described in John 20:6–7.
The cloth has been dated to around AD 700 by radiocarbon dating. However, at the same conference at which this information was presented, it was noted that in actuality the cloth has a definite history extending back to approximately AD 570. The laboratory noted that later oil contamination could have resulted in the late dating.[2]
The small chapel housing it was built specifically for the cloth by King Alfonso II of Asturias in AD 840; the Arca Santa is an elaborate reliquary chest with a Romanesque metal frontal for the storage of the Sudarium and other relics. The Sudarium is displayed to the public three times a year: Good Friday, the Feast of the Triumph of the Cross on 14 September, and its octave on 21 September.