This material has eroded over the past 10,000 years to produce beautiful rocky glens (e.g., Watkins Glen and Treman State Parks) and waterfalls (e.g., Taughannock Falls) as rainfall has descended toward the lakes below.

This outlying tract embraces a series of rocky glens and mountain torrents, crowned by the ruins of native strongholds, and interspersed with narrow ledges of cultivable alluvium.

Acoustically bad for an organ or choir, Sullivan thought, but for a bagpipe it was lovely, sounding like the old Celtic warpipes echoing through the rocky glens of Antrim.

As a landscapist, he tends toward the picturesque, especially in the scenes of rivers gushing through rocky glens.

Great big shiny coloured pictures of battles in rocky glens, or emaciated saints getting themselves stuck with arrow.

Numerous rocky glens and gorges were seen, having various kinds of shrubs and low trees growing in the interstices of the rocks.

In a few sheltered rocky glens and on inaccessible cliff ledges and islands in larger lochs, dense stands of scrub of Salix aurita and S. cinerea subsp. oleifolia occur with scattered bushes of Betula pubescens, Corylus avellana, Lonicera periclymenum, Populus tremula, Rosa afzeliana, Rubus fruticosus agg., and Sorbus aucuparia (Spence, 1960; Bennett and Fossitt, 1989).

We dare not plow and plant crops as our ancestors once did in these rocky glens, for the myths tell us demons fly through the air and have eyes, and some say that the strange metal cylinder that passes overhead on some days is itself a demon.