Brú na Bóinne: Knowth at first is less striking. Its interior shafts (oriented to the equinoxes) are less spectacular than Newgrange's, and it lacks the shining white exterior of the more famous mound. However, the archeologists here chose to leave the white rocks on the ground surrounding the mound, believing that was where they had originally been placed. However, in some ways it is even more impressive. It is actually the larger of the two, being over 275 feet in diameter.