So far as I can ascertain, the tomb of King Gorm has not yet been opened. That of Thyra was explored many years ago--in 1820 apparently; but no sections or details have been published, so that it is extremely difficult to ascertain even the dimensions. Engelhardt reports the height as 43 feet, and the diameter as 240 feet;[348] Worsaae gives the height as 75 feet, and the diameter as 180 feet, and he is probably correct.[349] But in Denmark anything that cannot be put into a glass case in a museum is so completely rejected as valueless that no one cares to record it. When entered, it was found that it had been plundered probably in the middle ages, and all that remained were the following articles:--A small silver goblet, lined with gold on the inside, and ornamented with interlaced dragons on the exterior; some fibulæ, tortoise-shaped, and ornamented with fantastic heads of animals; some buckle-heads, and other objects of no great value. The chamber in which these objects were found measured 23 feet in length by 8 feet 3 inches in width, and was 5 feet high;[350] the walls and roof, formed of massive slabs of oak, were originally, it appears, hung with tapestries, but these had nearly all perished. Not only are these monuments of Gorm and Thyra interesting in themselves, and deserving of much more attention than the Danes have hitherto bestowed upon them, but they are most important in their bearing on the general history of monuments of this class. In the first place, their date and destination are fixed beyond dispute, and this being so, the only ground is taken away on which any _à priori_ argument could be based with regard to the age of any mound anterior to the tenth century. As soon as it is realised that sepulchral mounds have been erected in the tenth century, it is impossible to argue that it is unlikely or improbable that Silbury Hill or any other mound in England may not belong to the sixth or any subsequent century down to that time. The argument is, however, even more pertinent with reference to Maes-Howe and other tumuli in the Orkneys. If the Scandinavian kings were buried in "howes" down to the year 1000--I believe they extend much beyond that date--it is almost certain that the Orcadian Jarls were interred in similar mounds down at least to their conversion to Christianity (A.D. 986). Whether Maes-Howe was erected as a sepulchre for the sons of Ragnar Lothbrok, as John Stuart seems to infer from the inscriptions,[351] or of Havard Earl, as I have above attempted to show, is of little consequence to the general argument. That it was the grave of a Scandinavian Jarl, erected between 800 and 1000 A.D., seems quite certain, and my own impression is that it is almost as certainly the tomb of the individual Jarl to whom I have ventured to ascribe it.