Dartmoor. The unexplained Bronze Age landscape.

Dartmoor is a granite upland in the county of Devonshire South West England. It is a National Park with probably the greatest concentration of Bronze Age remains in Europe. Unfortunately this important prehistoric landscape has not been adequately explained.
I have been a guide for the National Park since the "Guided Walks" began over thirty years ago, and have taken a special interest in the Bronze Age Landscape.
These articles are my personal understanding of the situation, and not the accepted view of the National Park Authority. Many of my findings will be in direct conflict with the officially accepted interpretations.
Although Dartmoor has been one of the most explored and studied regions of Britain, there are still many unanswered questions.
1. Why was dartmoor so heavily populated in the Bronze Age and why did the population diminish so dramatically in the Iron Age?
2. Why were so many settlements created in places that would appear to be difficult to find adequate food?
3.Who were the people that settled on dartmoor in the Bronze Age, and why did they choose to live there?
4. What was the thinking behind the strange parallel field systems?
5. What was the purpose of the Long Reaves?
6. What was the purpose of the Stone Rows?
7. What was the purpose of the Stone circles?
8. What was the purpose of the Standing Stones?
9. Was the tin ore exploited in the Bronze Age?
10. Were the large Cairns and Barrows Burial mounds, or did they have a more practical purpose.