 By 1806 the rebuilt Citadel was surrounded by an unrevetted defensive ditch; in the centre was a set of temporary barracks huts (along with the three guardhouses).A well was sunk in 1809, to ensure a permanent supply of water in case of a siege; (a pumphouse was added in 1860).Following a collapse of part of the fortifications in 1807 another application was made for revetting to take place.