Green’s Dictionary of Slang

(S.Afr. Und.) North End Jail, Capetown.

1969		M. Benson At Still Point (1971) 112: ‘On the left, [...] that’s Rooihell – North End jail.’ A grey massive building. ‘Why Red Hell?’ ‘There’s a royal coat of arms over the entrance, and the Cape accent for “royal” – “rooihell”.’.
1973		A. Fugard Notebooks (1983) 208: Their friendship forged in the long trip [...] standing hand-cuffed together all the time, from Rooi Hel.