what sort of material(s) and machines would you use o build a road in the rough Scottish highlands?

Question: what sort of material(s) and machines would you use o build a road in the rough Scottish highlands?
- Keywords:
  machine,
  material,
  road,
  Scotland
Asked by Kim_Kardashian to Philippa on 13 Mar 2015.
- Philippa Jefferis answered on 13 Mar 2015:
  
  Oo a tough question! Well due to the strong bedrock, it would be much easier to construct on rather than on a boggy marshland. However you would probably need to cut through some rock to ensure you had a nice flat base to build on – so in terms of machines, some heavy duty drilling would likely be needed.

Question: what sort of material(s) and machines would you use o build a road in the rough Scottish highlands?