We deployed an 11 station network surrounding the lower most reaches of Columbia Glacier in spring 2004. 10 sensors are L22s and we installed one 40t broadband sensor. THe stations will be in the filed for ~1 yr, with a data gap for some of the winter. The goal of the experiment is investigate spatial and temporal variabilty of icequakes and relate this information to processes taht are governing the rapid motion and retreat of the glacier.