The Cave Mosque, referred to as 'Zawiyat Derna', represents a significant religious and architectural site in Libya. Built by Imam Muhammad bin Ali as his second Zawiya following Al-Bayda, it stands out as one of only five he personally oversaw out of a total of 135 Zawiyas in and outside of Libya. This particular mosque, taking advantage of a large natural cavity in the mountains, showcases unique architectural features consistent with the Maghreb style, highlighted by its arches and doors.

Imam Muhammad spent approximately two years at the Cave Mosque, a relatively long period compared to his stays at other Zawiyas, suggesting a deep connection to this site. Its name stems from the natural cave utilized in its construction, which serves as a natural ceiling for the mosque. The locals of Derna describe the mosque as a place of unique spirituality and tranquility, often sharing various historical narratives about its location’s religious significance.

Community stories speculate that the area where the mosque was built has a profound religious history, with tales suggesting it served as a refuge for Mark, one of Christ’s disciples, before his journey to Egypt. Another tale refers to it being the site of the historic victory of Derna. Such narratives not only enrich the mosque’s cultural significance but also enhance its role as a spiritual sanctuary for visitors today, reflecting the region's rich religious heritage and deep-rooted history.