The Mosque of the Forty Martyrs viewed from inside Masjid Qibly
The Mosque of the Forty Martyrs is a spacious room located to the north of Masjid Umar, where one of it’s two entrances can be found, the other being in Masjid al-Qibly. Historically, it has been used for gatherings for zikr (remembrance of Allah).
View from inside the Mosque of the Forty Martyrs
References: A guide to al-Aqsa mosque – PASSIA