Lava tubes and magnetic reversals

[Bill Frantz]

At 10:31 AM -0800 1/21/03, P A Hill & E V Goodall wrote:
>So do those who often survey lava tubes bring their own targets (maybe a 1
>meter stick), just to keep themselves off the walls, rocks and ceilings?

At Lava Beds, we use a stick.  I can't remember exactly how long it is, but
still being in the dark ages, it certainly isn't metric.  I think it might
be a yard.

Good Caving - Bill


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