been thinking about that line Blandiver the best i can come up with that would make any sense is "loupin oe'r the boggy linn" a linn being an old word for a waterfall or pond usually found at the bottom of a waterfall. I dont remember the locallity well enough to remember if it would fit but a waterfall on a scottish hill need not be of niagra proportions or even the grey mares tail It could be where it rummles ower rocks with no great hiegt involved.