The Tunnel: The Hidden Dome Volume One by Sean Monaghan
Approx. 64,000 words.
Published on February 21, 2012 by
Triple V Publishing.
When Kelly Barton takes her first off-world research posting to Mapinkura, it was supposed to be an easy job. The planet is a pristine but slated for colonization and development. Research is winding. Except that illegal development has already begun. And they've just discovered evidence of alien civilization. If they can't get construction halted the sites will be overrun.