Bulletin of the National Speleological Society - ISSN 0146-9517
Number 14: 47-48 - December 1952

A publication of the National Speleological Society

Lava Caves of Central Oregon
William R. Halliday

Abstract

The Cascade Grotto of the National Speleological Society has rendered invaluable service to the cause of speleological research by the intensity of its effort and the quality of its work in the areas of its activity. The importance of its reconnaissance will become immediately apparent to the readers of this article, written by one of its most dynamic members.

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