Osama's Hideouts: History Channel CGI
al-Masada (Lion's Den)
It is certain Bin Laden did build one camp near Jajhi Afghanistan, where only arab fighters were allowed. It was known as al-Masada or The Lion’s Den….a series of barrack, ammunition, stores, firing ranges, makeshift first-aid clinic, communication point and so forth.
The Mujahideen al-Masada ("Lion's Den") compound had been constructed by Osama bin Laden, in order to have a training facility that didn't rely on Pakistan.
Related: Tora Bora Caves