Love this old variant on Howitzer placement, allowing Howitzers to be placed inside a crater. This prevents ramming or overrun attacks against the Howitzer (except from infantry) and gives the Howitzer +1 defense. If you pay 24 points, the Howitzer also has Point Defense (!) which gives it a defense factor of 5! Its also completely concealed until fired, meaning you can potentially shoot an Ogre in the ass!
I love it!