The Batholiths experiment is a seismic refraction and wide-angle reflection survey across the Coast Mountains batholith of British Columbia, Canada. Several PASSCAL staff members will be deployed on the Batholiths Experiment in July of 2009. This project will involve over 2300 Texans and 1900 4.5Hz geophones in a combination of single-channel and three-channel station configurations, and will utilize two separate Field Centers.