In the rostral direction, the midbrain noticeably splays laterally. Examples include natural levees and crevasse splays. In low sun-angle photography additional scarps and splays can be observed. There are two arched windows on the two adjacent walls with splays decorated with grotesques. Beneath the tank, arched reinforced concrete splays span between the columns. The ribs and the splays of the two arched windows are decorated with similar grotesques. Notable sub-environments within the floodplain include natural levees and crevasse splays. It consists of seven segments of faults, subsidiary faults and splays. High in the nave walls are two small windows with modest splays. For instance, there is a small walled window with late Gothic splays. There, the fault splays into several branches. The window splays more widely towards the inside of the wall.