Though not easy to reach, Hormiguero has two impressive and unique buildings that are worth the trek. Buildings date as far back as AD 50; the city (whose name is Spanish for ‘anthill’) flourished during the late Classic period.
As you enter you’ll see the 50m-long Estructura II . The facade’s chief feature is a very menacing Chenes-style monster-mouth doorway, jaws open wide, set back between a pair of Classic Río Bec tiered towers. Around the back is intact Maya stonework and the remains of several columns. Follow the arrows 60m north to reach Estructura V , with a much smaller but equally ornate open-jawed temple atop a pyramidal base. Climb the right side for a closer look at the incredibly detailed stonework, especially along the corner columns that flank the doorway.
This site is reached by heading 14km south from Xpujil's stoplight, then turning right and going 8km west on a very rough but (hopefully) improving dirt-sand road, passable except following heavy rains.