Possible Clues:

• Not for a close shot at the Rockies, for instance
• Trainee working at country house travels a great distance
• Of an extended span of time or distance
• Crossing far side of glen, record mountains over a protracted period
• Extended left side of pitch by manor-house
• Involving a long period of time stretching into the future
• Learner on farm looking to the future
• Masked man, almost giving up Ecstasy once for good, looking well ahead
• Large working historic barn projected to last a good while
• Sort of missile originally launched at country farmstead?