Outside the caves, cicadas and echoes tap out a bulletin of anxiety. Inside, Peter Salem's sinister music resounds. The carvings that Penny Layden's memorably wan, plain Adela sees in the caves are represented by white-clad, recumbent actors, who in slow, sensuous movements stretch their limbs in her frightened, reeling direction. The place is heavy with the sound of people breathing in amplified unison as Adela staggers in a whirl of fear.