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There are separate caves close to Mitla and close to Yagul. They are combined into one UNESCO citation. The two nearby sites constitute a single . The caves significantly predate the Zapotec culture and show evidence of human domestication of the three sisters 10,000 years ago (making it older than Tehuacan).
Main entrance is at the Columns Group
Historic 18th century church built over Zapotec temples and underground crypts that some think had a gate to the underworld. The church is a beautiful single-nave structure with 3 domes. The church is adjacent to the Mitla archaeological site.