The Chausath Yogini Temple stands apart from the main western group, a short walk away across open ground. It is a simple structure: a rectangular granite enclosure with 81 small shrines around its inner perimeter, most now empty, with a central shrine in the middle. The whole thing lacks the soaring towers and elaborate sculpture of the famous temples, yet there is something genuinely eerie about the place — the oldest structure in Khajuraho, where the worship of fierce tantric goddesses predated the elaborate Chandela aesthetic.
Only a few of the original yogini images survive; most shrines now stand empty. The setting outside the fenced UNESCO enclosure means you can visit without paying the main entrance fee and often without another person in sight.
The Brahma Temple, another isolated outlier near a small tank, is worth a look on the same walk.