Mass grave discovered as IS retreats

A mass grave containing the remains of about 100 beheaded bodies has been discovered by troops advancing towards Mosul, forcing Islamic State militants to retreat to their last major urban stronghold in Iraq

Mosul: Iraqi special forces waging fierce urban war with jihadists in eastern districts

MOSUL

Buildings razed by IS to clear line of sight

Barricades erected across southern edge of city

Tigris

IRAQ

Enlarged area

5km 3 miles

Tall Kayf

ISLAMIC STATE CONTROL

Gogjali

IRAQ

Hamam al-Alil: Forensic experts investigating mass grave in grounds of agricultural college

Zlican: Turkish base

Bashiqa: 2,000-strong Kurdish peshmerga force and U.S. special forces drive IS out of town

KURDISH CONTROL

Bazwaia

Bartella

IRAQI ARMY CONTROL

Qaraqosh

IRAQ

Source: Institute for the Study of War, Stratfor

Picture: Google Earth