Use "rockwork" in a sentence

1. wine were put into a half-subterranean hollow lined with rockwork which lay near the Rue de Babylone and which had formerly served the chief-justice as a grotto; for at the epoch of follies and "Little Houses" no love was without a grotto

2. So I went along by the side of it, and came to a corner and a rockwork that enabled me to get to the top, and tumble into the garden I coveted