To reach the Highland Quarry, start at the junction of Arkansas 24 and 27 at the north edge of Nashville, Arkansas. Drive north on Arkansas 27 (toward Murfreesboro) for 8.6 mi (13.9 km) and turn left (west) on Arkansas 26 (Fig. 1). The gravels at this junction are units of the Tokio Formation (Upper Cretace- US). Drive 1.6 mi (2.6 km) to the west on Arkansas 26 to the entrance of the quarry. Enter the quarry and ask permission at the mine office. The most convenient exposures are on the west wall of the quarry (Figs. 2, 3). This end of the quarry has been inactive for several years, but if you follow the road through the quarry for 2 mi (3.2 km) or so you will reach more recently developed pits.