Crockern Tor is a tor in Dartmoor National Park, Devon, England. Composed of two large outcrops of rock, it is 396 metres above sea level. The lower outcrop was the open-air meeting place of the Devonshire Stannary Parliament from the early 14th century until the first half of the 18th century. On Parliament Rock, pictured here, the Lord Warden of the Great Court of the Devon Tinners supposedly sat during meetings of the Court.
The tor was one of only three features on Dartmoor that Tristram Risdon considered important enough to include in his Survey of Devon which was compiled in the early 17th century. In it he said that "Crockern Torr" had "a table and seats of moorstone [granite], hewn out of the rocks, lying in the force of all weather, no house or refuge being near it". The tor was also one of the few historic features to appear on Benjamin Donn's one inch to the mile map of Devon of 1765. It lies adjacent to the trans-Dartmoor packhorse track, so was a significant landmark for travellers since time immemorial.
The tor was the hub of the four Dartmoor stannary areas – Ashburton, Chagford, and Plympton – whose boundaries radiate outwards from it. The Stannary Court was convoked here when deemed necessary, at irregular intervals, by the Lord Warden who summoned 24 representatives or "jurates" from each of the four stannaries. Each meeting probably continued for several days and dealt with matters such as setting stannary law, registering tinworks and mills, hearing petitions and imposing penalties on those guilty of breaking the stannary laws.
There is evidence for ten assemblies at Crockern Tor: in 1494, 1510, 1532, 1533, 1552, 1567, 1574, 1600, 1688 and 1703. The earliest documented meeting on 1 September 1494 had Sir John Stepcote, vice-warden of the Devon Stannaries, as chairman. Sir Walter Raleigh was Lord Warden of the Stannaries for many years, and it is recorded that he presided at one Court at Crockern Tor, on 27 October 1600. The last meeting for which records survive was on 23 September 1703 where the Warden, John Granville, 1st Baron Granville and the Vice-Warden, the Honourable Samuel Rolle, opened the court at 8 a.m. The last court was said to have been held in or around 1745, but no documentation exists, and considering that the tin industry on Dartmoor had by then declined greatly, it could have been only a small affair.