I only read the story The Forest Path to the Spring, on the recommendation of a poetry workshop instructor. I found it difficult in the way that P.K. Page poems are difficult: the phrasing dips into the surreal, and the tone reminds me of a beat generation writer meandering through their road novella. That aside, there's some genuine literary gemstones to be mined from this work, and I think that some of them are of the stubborn type, requiring multiple readings to unearth.
Apparently Under the Volcano is essential reading. I've put it on the wish list. As a side note, Lowry passed away during a "misadventure" at the age of 48. As of this review I'm only a year younger.