A plank pathway about four feet above the floor had been laid across the beams, and along this Ingred decided to venture.
She started, balancing herself with her arms, and kept her equilibrium, though the plank was narrow and sprang as she walked.

Verity, who had no head for such achievements, preferred to scramble along the floor, creeping under the rafters, in spite of the thick dust of years that lay there.

Eventually they both reached the radius of light, and found another doorway leading down by a few steps into what was apparently a cupboard.

In the wall of the cupboard, however, were frets through which the sunlight was streaming.

Ingred applied an eye and gave a gasp of satisfaction.
They were in the peep-hole on the wall of the nave, and could gaze straight down into the church below.