Fig. 891.—Rock-tracing—turtle, cuttle-fish, dromedary, and another animal (possibly a lion), ships, and a footprint. Height, 10½ feet; width, 15 feet.—Ryxö, Brastad parish, Bohuslän.
Fig. 892.—Rock-tracing representing reindeer, and probably a horse in a boat. Height, 5 feet; width, 12½ feet.—Massleberg, Skee parish, Bohuslän.
Fig. 893.—Hill showing rock-tracings.
In Bohuslän the tracings are cut in the quartz, which is the geological formation of the coast: they are mostly upon slightly inclined rocks, which are generally two or three hundred feet or more above the present level of the sea, and which have been polished by the action of the ice. The width of the lines in the same representation varies from one to two inches, and even more; and their depth is often only a third or fourth of an inch, and at times so shallow as to be barely perceptible. Those tracings, which have for hundreds, perhaps for thousands, of years been laid bare to the ravages of the northern climate, are now most difficult to decipher, while those which have been protected by earth are as fresh as if they had been cut to-day; many seem to have been cut near the middle or base of the hills, which were covered with vegetation, and were in the course of time concealed by the detritus from above.
Fig. 894.—Part of rock-tracing, Brastad parish, Bohuslän, with numerous figures, nearly one hundred in number, varying in size from two inches to several feet, and mystic or symbolical footprints.
Fig. 895.—Rock-tracing—men fighting with spears; a man apparently lying dead in front of a boat, and a large number of domestic animals.—Tanum parish, Bohuslän.