Why is there less information about Marie Byrd Land?

[ComputerGhost]

I saw a map of bases in Antarctica the other day, and there was only one part I noticed that had very few. Marie Byrd Land had only one base (and it closed in 1972 according to Wikipedia). I did a google search and found that there is very little information on Marie Byrd Land other than a little about the geology.

What exactly is there other than a lot of mountains and volcanoes? Why are there no bases there? Is there anything interesting in Marie Byrd Land? Is there any research being done there?