Men with drill rig on truck taking core samples?

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  Colorado River

  Visual Materials

  Colorado River - [a boat with tent is tethered in middle of deep river section with steep walls. Boat appears to be taking core samples along the river bottom for a new dam site with a diamond drill rig]

  photCL SCE 02 - 07833

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  Colorado River

  Visual Materials

  Colorado River - [a boat with tent is tethered in middle of deep river section with steep walls. Boat appears to be taking core samples along the river bottom for a new dam site with a diamond drill rig]

  photCL SCE 02 - 07834

• 

  Colorado River

  Visual Materials

  Colorado River - [a boat with tent is tethered in middle of deep river section with steep walls. Boat appears to be taking core samples along the river bottom for a new dam site with a diamond drill rig]

  photCL SCE 02 - 07835

• 

  Colorado River

  Visual Materials

  Colorado River - [a boat with tent is tethered in middle of deep river section with steep walls. Boat appears to be taking core samples along the river bottom for a new dam site with a diamond drill rig]

  photCL SCE 02 - 07836

• 

  Colorado River

  Visual Materials

  Colorado River - [a boat with tent is tethered in middle of deep river section with steep walls. Boat appears to be taking core samples along the river bottom for a new dam site with a diamond drill rig]

  photCL SCE 02 - 07837

• 

  Colorado River

  Visual Materials

  Colorado River - [a boat with tent is tethered in middle of deep river section with steep walls. Boat appears to be taking core samples along the river bottom for a new dam site with a diamond drill rig]

  photCL SCE 02 - 07838