LVG E.IV/E.I - where's the radiator?

[RLWP]

This is the one and only LVG E.I two seater of 1916:



It has a couple of interesting features, the first use of a ring mount for an observer in a German machine and a forward firing synchronised gun with an unknown sychronising mechanism

It has a water cooled 120hp Mercedes D.II engine, there's a huge water tank on top of the engine - but where is the radiator? There doesn't seem to be a surviving front view of this aeroplane, how did contemporary monoplanes solve this problem?

https://en.wikipedia.org/wiki/LVG_E.I

Richard

[Berman]

 I do not think that is just a large water tank on top of the engine. It appears to be a roughly cylindrical radiator. Slightly curved sides with a circular rear.