Bil Phillips, cave explorer and instructor, introduces the benefits of the Reference Exit Marker (REM) as an alternative to cookies or line arrows. The presentation describes how the REM is used for navigation in cave environments.

• Overview of REM use compared to cookies and line arrows
• Demonstrates integration with the Navigation-Kit
• Focused on practical cave navigation and route marking

Together with the Navigation-Kit, the REM provides a practical solution for cave navigation.