Possible Clues:

• Dense group of trees or bushes
• Pass across entrance to hilly copse
• Hard to punch something punched? This is dense!
• Dense alien found in wooded area
• Dense group or trees or bushes
• Dense tangle of bushes
• Henry brought in permit to enter copse
• Shrubs and small trees growing close together
• Shrubs and small trees growing together
• Area of shrubbery