Thus she was not aware of Brice's diversion.
Gavin approached the twenty-foot high vine-wall, and thrust his hand in through the thick tangle of leaves.

His sensitive fingers touched the surface of a paling.

Running his hand along, he found that the entire vine palisade was, apparently, backed by a twenty-foot stockade of solid boards.
If there were a gate, it was hidden from view.

It was then that Claire, looking up from luring Bobby Burns away from the toad-hole, saw whither Gavin had strayed.
"Oh," she called, hurrying toward him.

"That's the enclosure Milo made years ago for his experiments in evolving the 'perfect orange' he is so daft about.