How to run a bumpy grassland? I was wondering if in attendance were any prairie mowers that...

I was wondering if in attendance were any prairie mowers that would be able to cope near quite a bumpy pasture, the previous owner grew potatoes and other veg which has moved out the lawn next to highs and lows adjectives over the place. At the moment I am going at it with a strimmer which take hours and I dont think the strimmer is designed to cope next to the whole prairie! Any help would be great. Thanks.
Answers:    Yes a Hover Mower will Hover over the Bumps,,,,,
I expect if i was you and it be that big of a headache to move i would get a garden tiller appendage held that you can use for flower beds and try to plane it better and resow grass seeds and finishing it all instead of trying to find a mower to mow beside that way i would own a prettier and level patio that was flowing to mow because you are spending hrs mowing as it is why not fix it a little at a time and spend those hrs in that