Re: Area 51 is moving
If you traveled billions of miles to see another culture on their planet, would you make it so your craft could ONLY land on a flat, paved surface? No, you would make sure it could land on any type of surface with varying gravity. Otherwise the whole trip could be meaningless. Let them land in the dirt or a corn field or something.
To the optimist, the glass is half full. To the pessimist, the glass is half empty. To the engineer, the glass is twice as big as it needs to be.