Adherents of Sufism, a mystical dimension of Islam, perform the dhikr, a ritual that can involve drumming and dance, at the tomb of Sheikh Hamed al Nil in Omdurman. Sudan is home to one of the world’s largest Sufi communities. Its leaders wield powerful influence, and some Sufi orders supported the popular uprising that toppled the 30-year dictatorship of Omar al Bashir. Via @natgeo 📸 by @nicholesobecki