Basalt quarries field trip June 30, 2020July 1, 2020 QMPGEOeditor3 Click on any photo and see slideshow. Thanks! Mount Walker Jeff and Ken lecture 6-11-2016Penny Creek Quarry discussion 6-11-2016Shine Quarry 6-11-2016Basalt quarries field trip fun 6-11-2016Mount Walker end of field trip lecture 6-11-2016
