It was composed of enormous blocks of granite, a few of which, insecurely balanced, seemed to tremble on their foundations, and Pencroft could feel rapid quiverings under his head as it rested on the rock.
C'étaient d'énormes quartiers de granit, dont quelques-uns pourtant, insuffisamment équilibrés, semblaient trembler sur leur base. Pencroff sentait cela, et sous sa main, appuyée aux parois, couraient de rapides frémissements.