I would invest in a huge run (maybe 5ft. L 5ft. W and maybe 6ft T or so plus an extra foot down in the soil) chain link should be good but depends on your rabbits age and size because I notice my littlest can wiggle thru a wide chain link. Plus a roof of some sort (a tarp or wooden sort?)
You can line the inner part with logs buried halfway in the ground. Or rocks, bricks, or cement blocks. This keeps mine from digging out and they spend large portions of their day in our dog run (with no dogs of course!).
You can use loose dirt or top it with some gravel.
You can also keep a large dog house or igloo for shelter plus shade. A garden inside it would also be cool with some herbs like parsley, kale, basil, clover, dandelions.