The penitentiary shuttle (ARMADILLO Class) was used by the Imperials to move Wookies from Kazhyyk to various imperials facilities like the death Star construction site and also sold to - from various slavers. This special shuttle could hold 24 prisoners in individual cells, was well armored and armed despite the fact that it was generally escorted by tie fighters.
Still painted with the ex Republic colors patern but with the logo - emblem of the "new" Empire.
The detention block is a temporary concrete building build to hold the Wookies collected from bounty hunters (mainly Transdoshans) to larger slave's camp. This site is heavyly wheatered due to the "too close" poximity of the landing pad, from where land and take off the shuttles, and the high humidity of the region.