Possible Clues:

• Even in narrow tongue of land, children may play here
• Playground feature
• Relax with parents, at first, inside play area
• Where children play with spades and diggings
• Place for building castles — ultimately yours and mine
• Smooth suggestion about play area
• Children's play area with bar for protection
• Children's play area
• Son with cap going back to play area
• Quarry in coastal feature also