Rob Witter

Detailed Description
Rob Witter examining the contact between glacial lake beds (grey, below) and river gravels (brown, above) that show how the landscape has changed over time.
Sources/Usage
Public Domain.
public domain
Rob Witter examining the contact between glacial lake beds (grey, below) and river gravels (brown, above) that show how the landscape has changed over time.
Public Domain.
public domain