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Transcription
fourth lava flow from the bottom [49]
of the section exposed by the valley. It
and now longer
seems to be deeper than it was in
1903 [XX, XXII, 69 A] at any rate,
it is evident that scouring of the
rock bed is active during the pass-
ing of the floods, which still are
heavily laden with sand, gravel
and bowlders from the sides and
head of its valley.
Three-fourths of a mile from the
sea [cf. distance publ. in article]
and 470 feet by aneroid measurement
above it is the 30-foot precipice,
formed by the edge of a lava flow crossing
the gorge, which stopped my advance
up the valley on my previous visits.
Now a ladder brought with us from
Chateauclair enabled me and
my men to scale the ledge and