The Combat Training Camp (or King Lathas's training grounds) can be accessed after the Biohazard quest. It was established by King Lathas of East Ardougne to train his forces, and it is located north-west of East Ardougne (and also south of Tree Gnome Stronghold)—it can be accessed from East Ardougne by heading north, then run west, take the bridge south and run west past the Chaos Temple. The entrance to the training grounds is located at the southern fence.
The training camp has several level 63 caged ogres, which can be used for training Ranged and Melee (only when using a halberd). The cage has a loose railing, which you can use to enter the cage to retrieve drops and spent arrows. Attempting to attack the ogres while inside the cage results in a message saying "These ogres are for ranged combat only".
There is also a group of dummies that can be attacked for 50 Attack experience per hit. This can only be done six times total, ever.
There are several beer respawns on the tables in the camp.
Entering the Combat Training Camp is a requirement for the easy Ardougne Diary.
Inside the training grounds is King Lathas's Armoury which sells melee and ranged items, including arrowtips for Fletching.