Since you haven't had any responses yet, I'll provide our experience that is about 5 years old. We were staying in Newfoundland and took the ferry to Blanc Sablon with the intention of driving the toad towards Goosebay. The first thing we noticed is that anybody walking outside had netting over their head. In NH we have May flies because they occur in May only, The same flies in Labrador have 5 life cycles not one, so they're there all summer.
In Red Bay the Road ends, We didn't go further because we were told the gravel road is made of very sharp stones and flats are very common.
Again this info is 5 years old and they may have paved the road since then.