Prenj is mountain massif in Herzegovina with many peaks, and the highest one of them is Zelena glava (green head) 2155m altitude.
Prenj is settled in middle part of Dinarides. It is surrounded by many lakes (natural and artificial) Boračko, Jabalničko, Grabovičko, Salakovac and rivers Neretva, Ljuta, Neretvica, Bijela and Držanka.
Beginning of this massif is near Glavatičevo ( at Neretva, upstream from Konjic) and it stretches all the way to Bijelo polje near Mostar. This mountain massif is surrounded with mountains Bitovinja from north side, Visočica from the east side, Bjelašnica from the north-east side, Čvrsnica from the west side, Velež from the south side and Crvanj from the south-east side.
Konjic, Jablanica and Mostar are three towns settled in a sole of this mountain.
