Now residing in the Rotunda Museum, Gristhorpe Man, the tallest prehistoric skeleton measured to date, was found by William Beswick and members of the Scarborough Philosophical Society on Thursday July 10 1834.

The museum is holding a special event next month to commemorate the finding of Gristhorpe Man, which is back in its original resting place following a move to the Department of Archaeological Sciences at Bradford University in 2005 for a series of scientific tests.

Found in a large oak coffin after workmen dug into a tumulus on a burial ground on Gristhorpe cliffs, the skeleton was found wrapped in a hide cloak. It is regarded as the best example of an oak tree trunk burial.

Blackened by a reaction between the iron in the water and the tannin in the bark of the coffin, the bones were placed in a laundry copper and simmered in a thin solution of glue made from horse bones before being air-dried for several days.

A monograph on the discovery was written by William Crawford Williamson, the son of John Williamson, the first keeper of the Rotunda Museum, and included exquisite drawings of the skull and grave goods, with details of the method of preservation and the coffin dimensions.

The coffin was displayed outside the museum until 1853, when it was moved inside after decaying.

Karen Snowden, head of collections for the Scarborough Museums Trust, said the discovery was made more remarkable by its condition. "His find was unusual for two reasons.

''Firstly, most oak coffins tend to have no remains, with the bones dissolving, and secondly, all the little bones on his fingers and toes are still intact."

She said although he may not have been the bronze age warrior chief some perceived him to be, he was still a well-respected figure at the time of his death.

"When they found him they thought he was less than 500 years old. They couldn't conceive he was more than 3,000 years old.

"He was someone of importance and definitely over 45. Unfortunately, the test only goes up to that age, so we can't get a definite age. But he was a big man and well nourished, who led a reasonably easy life and there was no indication of suffering from his bones. He is the tallest prehistoric skeleton which has been measured known to date.