Complex sentence: Unlike the prehistoric monumental runestones raised in Scandinavia, the Maine stones are small handheld objects similar to the authentic Kingittorsuaq Runestone found in Greenland in 1824.
Split into simpler sentences: Unlike the prehistoric monumental runestones raised in Scandinavia, the stones are small handheld objects. A similar stone is the authentic Kingittorsuaq Runestone found in Greenland in 1824.