Possible Clues:

• Timber for the outhouse is disposed of
• Fuel storage structure
• Place of discreet punishment
• Place to store fire logs
• One''d have got rid of the building and fired the contents by the sound of it
• Went quickly round rear of old garden hut?
• Where there's something nasty?
• A trip here means trouble!
• Location of something nasty discarded by golf club?
• Rural outbuilding