The Forgotten Depths

"Okay." Helen also supported the idea, but she looked a little concerned. "We live in the city. It's not like people in the countryside who can dig a big water tank in their yard. It's lucky that we can use this underground safe house to dig one. Where else could we even find a place like that?"

"Don't worry, Grandma. Sadie and I will go look," Callum said with a smile.

"I'll go too," Gareth said,