underground spaces

i’m currently working on a project dealing with design and architecture in underground spaces. Can anyone give me suggestions on current projects they’ve heard/read of??? I’m open to any info you have. Thanks!

There is a decent amount about earth berm and underground houses in this book:

http://www.amazon.com/gp/product/0471285285/102-5159675-9317754?v=glance&n=283155&v=glance

Plus its really funny.

watch carefully and u will find many special element
all that element will be used in your design
of course your imagination is necessary too
good luck