Muslims celebrate Eid al-Adha festival

Updated 4:27 AM ET, Sat September 2, 2017

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(CNN)Across the Muslim world, many are celebrating the festival of Eid al-Adha -- considered one of Islam's revered observances.

Also known as the Feast of Sacrifice or "big Eid", the four-day holiday is one of two Eid festivals observed by the Muslim faithful. The second, Eid al-Fitr, comes at the end of Ramadan, the month of fasting.
An aerial view of Russia's Muslim community praying in a street outside the Central Mosque during Eid al-Adha.
Syrian children ride an attraction in the northwest Syrian city of Idlib.
Muslims gather to perform the Eid al-Adha prayer at Es-Saraya Square in Gaza City, Gaza.
The holiday coincides with the climax of the hajj, the sacred journey to Mecca that around 2 million Muslims undertake each year.
Thousands of Muslim pilgrims have been descending upon the complex in Mina since dawn on Friday to toss rocks at the three pillars, known as Jamarat, which symbolize the devil.
Muslims pray outside a mosque in St. Petersburg, Russia on Friday.