Palisades Sill
intrusive igneous body that forms the cliffs largely following the southern portion of the Hudson River
en-GB/ˈpælɪˌseɪdz ˈsɪl/
en-US/ˌpælɪˈseɪdz ˈsɪl/
intrusive igneous body that forms the cliffs largely following the southern portion of the Hudson River