One of Leitrim’s most popular and spectacular tourist attractions, the waterfall at Glencar, is also its most potentially life and reality changing. Since the earliest times its abundance of negatively charged ions have been inspiring anyone who came close to it. It has long been known that there is a feel good factor associated with any form of prolonged exposure to breaking water (including beaches and in your domestic shower) with improvement of mood, increased awareness and improved health common. More on this subject can be read here.
The waterfall at Glencar is different for some reason with revelations and visions being associated with it since earliest records. A tradition of the holy fool was noted among the peasantry in the 1800’s and W.B. Yeats is said to have been a frequent visitor. During the last 200 or so years it appears that the majority of its visitors have become curiously and gradually immune to its power however. Although every so often someone will approach it and leave a very different person than when they first arrived. (Stephen Rennicks)
A Guide to Here Nor There 