The remains include an easily identifiable mikve, or ritual bath, as well as an olive press cut out of the rock. Since there are other olive presses with a mikve alongside them in the area, there is a theory that the oil pressed here was used in the Temple in Jerusalem and that those who produced it purified themselves first. From the area of the excavations, you can see, across the valley, a domed building which marks an ancient spring, Ein Sejma. You can also see two roads leading to the spring - one above it and one below it. Although it is not a long walk to the spring, both roads are accessible by car.
Entry is free.
You can walk into Bat Ayin or visit the spring at any time, but since the residents of the area are religious, you might not want to drive there on Shabbat.