Note 184 — Chapter XVIII · VARIOUS FORMS OF GRAVES.
Reading edition
In Tanum parish, Bohuslän, alone there are more than 2,000 mounds, the largest being about 300 feet in circumference; near Upsala nearly 600; at Ultuna, 700.
The greatest number of mounds found in any one spot is east of the ancient Birka Bjorko, where there are over 1,000 of them; while seven graves, as will be seen in the course of the narrative, are found close together.