There are several disused basalt quarries near the coast road southeast of Glenarm. This site is located about 150m southwest of the coastal rock feature known as Madman's or Spy Window, in the townland of Little Deer Park, 2km from Glenarm. Just south of the basalt quarry is a larger limestone quarry connected by a short track that enters the basalt quarry at its south side through a cutting. This cutting exposes the upper surface of the limestone capped with a flint-rich residual soil. In the basalt quarry, the second basalt flow exhibits excellent pipe amygdales where vapour bubbles rose through partially congealed lava. The quarry faces are largely obscured by abundant loose scree of moderately fresh, amygdaloidal basalt. This scree provides good specimens of zeolite minerals notably pink gmelinite, radiating natrolite, and equant crystals of analcime. Less common are chabazite, heulandite, thomsonite, levyne, cowlesite and erionite/offretite (for descriptions of these minerals see Tschernich, 1992).
