Oh wow, what a marvellous idea, love it. Although £42 is a considerable amount of money, and if I go with my husband and son... that is not a budget-friendly excursion haha but it would be worth visiting and enjoying it I am sure!
In the area where we live now, there are some marble quarries I see while driving on the highway. I wonder if they would be converted into something similar when the mining is depleted. It would be great.
RE: The daylight hours under the domes.