Digging a hole, inflating a dome then burying it is an idea that's been considered yes, has the nice benefit of a pressurized atmosphere for the humans inside a

Digging a hole, inflating a dome then burying it is an idea that's been considered yes, has the nice benefit of a pressurized atmosphere for the humans inside as well. With access to water you can make martian concrete as well. You can do it without water using molten sulfur as well.