Deer stones are usually constructed from granite or greenstone, depending on which is the most abundant in the surrounding area. They have varying heights; most are over 3 feet tall, but some reach a height of 15 feet. The tops of the stones can be flat, round or smashed, suggesting that perhaps the original top had been deliberately destroyed. The stones are usually oriented with the decorated face to the east. The carvings and designs were most usually completed before the stone was erected, though some stones show signs of being carved in place. The designs were pecked or ground into the stone surface. Deep-grooved cuts and right-angle surfaces indicate the presence of metal tools. Stone tools were used to smooth the harsh cuts of some designs. Nearly all the stones were hand carved, but some unusual stones show signs that they could have been cut with a primitive type of mechanical drill.