'Eddie! Davie!' Clayton roared.
There was no response until Lorna again tapped her shovel on the rock and immediately heard an answering click.
'We've cut a little space around here,' Clayton said. 'We need a small man to squeeze through.' He looked around and pointed to the youngest navigator, a wiry man with short red hair. 'Matthew; you'll do. Get through there, see who's there and if we can get them out.'
Lorna was not sure of Matthew's age; somewhere between eighteen and twenty- five she guessed, even although his eyes were as old as time.
Matthew stepped from the crowd and tried to squeeze through the gap. 'It's no good,' he said a few moments later. 'I'm too big.'
'Can we make the gap larger?' Lorna asked.
'Not without bringing the roof down.' Clayton said.
Lorna looked at th
