East of Ibri, Highway 21 roars purposefully east towards Bahla, just under 100km distance. The area is home to two of Oman’s most celebrated prehistoric sites: the beehive tombs at Bat and Al Ayn. The former is more likely to appeal to dedicated archeologists or students of ancient history than casual visitors, though the latter, with a string of beehive tombs lined up dramatically atop a rocky ridge, is well worth the detour from the main highway.