Magic wand can work with it:
First draw he desired Ellipse with the Arc/Circle Tool, and then "magic-wand" the wall on the ellipse..
Another option is instead of place the wall with the magic wand, model it manually, because an ellipse is only 2 different arcs, and mirror.
I hope this works.
Regards
Nando
Nando Mogollon
Director @ BuilDigital
nando@buildigital.com.au
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