Bhonyra
In Jainism, a Bhonyra ( ,  ) is an underground chamber with Jain images. In the past, it was used to conceal sacred idols during times of disturbance. There are several Jain temples in Bundelkhand that existed as a concealed  bhonyra chamber for several centuries before being rediscovered. In 2001, an entire Jain temple was found beneath a mound known as Rajgadhi Timbo at Umta, Gujarat. It was apparently buried to protect it from the destruction about 800 years ago. In some regions, it became a common practice to build a bhonyra attached to the temple. Naya Mandir in Delhi has a concealed chamber. A visitor in 1876 described it:In Delhi I found a Jain temple which was wholly unknown to Europeans well acquainted with the city; and on prosecuting inquiry, I got its priest to open to me a concealed chamber containing large statues of several of the Tirthankaras richly ornamented.The chamber has now been given the form of a cave, suitable for peaceful meditation by visiting Jain monks. A few years ago, several Jain idols were rediscovered in a bhonyara in Sanghiji temple, Sanganer in Rajasthan. Some of the Jain temples in Ahmedabad have an underground chamber. 