We have no meanings for "adamantine rock" in our records yet.
1 Of this adamantine rock all the hills were now composed.
2 Here beneath the world, held fast by adamantine rock , impenetrable.
3 The eye ranges over these peaks, and curiously formed lumps of adamantine rock , with astonishment and horror.
4 Isthmuses are usually composed of adamantine rock or of shifting sands-thelatter being much the more refractory material to deal with.
5 The nine-fold gates were of brass, iron, and adamantine rock , reaching high to the mighty roof, and most horrible were the Shapes that guarded it.
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