7-1 THE STONE AGK. 



narrow gallery leading into it, the whole being covered by a 

 mound, the base of which was generally surrounded by a circle 

 of larger or smaller stones. 



The chamber in a passage grave is either oblong, square, 

 oval, or nearly round; the walls are formed by large upright 

 blocks, not quite smooth, though even on the inside ; the 

 interstices are generally carefully filled up with gravel or 

 fragments of stone, and birch bark is sometimes found between 

 the blocks. The roof was formed by immense flat slabs or 

 blocks, smooth on the under side, but rough on the top, the 



Fig. 8. Passage grave near Karleby front view ; length of the main gallery, 

 covered by nine large stones, 52 feet ; width, 7 feet ; length of passage, 40 feet ; 

 height, 6 feet, 



interstices being closed in the same manner as those in the 

 walls. The floor is sometimes covered with small flat stones, 

 but usually with earth. On the long side of the chamber 

 there is an opening, from \\hich a passage was built in the 

 same manner as the chamber, only longer and narrower. 

 This passage, or more precisely its inner part, was covered 

 with blocks resembling the roof blocks of the chamber, but 

 smaller ; near the inner opening of the passage, and the outer 

 end of its covered part a kind of door setting has been often 

 found, consisting of a stone threshold and two narrow door- 

 posts. 



