I selected my cabin site and did some test hole digging. The site it 8-10" of tundra the 6-8" of hard compacted dirt then gravel. What do you guys think? I'm thinking scrape it down to the gravel but then I need to haul in some gravel to fill it back up. I'm wondering if it would be acceptable to just scrape off the tundra and add gravel on top of the dirt? The gravel is going to be loose beach gravel that I have to haul by hand about 130'. Thinking maybe that dirt would be a good medium to kinda lock the loose gravel in place? The cabin is going to be 12x20 built on 2 rows of 5 pier blocks with a 4"x12"x20' beam on each. Any input/prior experience appreciated.