Nature Notes From Crater Lake
Volume 1, No. 1, July 1928
"Sulphur" on Crater Lake
By Earl U. Homuth
It is often observed from the Rim above
Crater Lake, and from boats on the lake, that great masses of sulphur
are floating on the water. This arouses the curiosity of the tourists
and explanations are continuously in order. The entire region being of
volcanic origin, the conclusion is generally offered that the sulphur is
due to this fact. Examination, however, discloses that this wheat
substance is pollen, probably of the lodgepole (P. contorta)
blown in clouds from a distance and dropped upon the water in
significant quantities to be visible from the cliffs above the lake.
