On the other side of the road (and through the parking area), a path leads 200 meters to the impressive Arch of Kabah.
The six-meter (19.7-foot) high arch dates to A.D. 670–770 and marked one end of a grand sacbé, or raised stone-paved road, that extended 30 kilometers (18.6 miles) from Kabah [1] to Uxmal [2], and is still traceable today. The first 15 kilometers (9.3 miles), from Kabah to the settlement of Nohpat, the road runs perfectly straight, before veering slightly to reach Uxmal.
North of the path leading to the arch is the Great Pyramid, the largest structure in Kabah. Yet to be excavated and off-limits to climbing, it remains for now an impressively huge mound covered in grass and trees.
Links:
[1] http://www.moon.com/destinations/cancun-the-yucatan/the-state-yucatan/the-puuc-route/kabah-archaeological-zone
[2] http://www.moon.com/destinations/cancun-the-yucatan/the-state-yucatan/the-puuc-route/uxmal-archaeological-zone