Foraging here would be a hell of a job in winters. Every once in a while, a story emerges here of someone
believing that they can abandon the world and exist on their foraging. Usually the story appears at their funerals.
The nuts & berries thing, although abundant here, does not work well.
Paleo peoples lived very successfully on the coast. To do so meant to capitalize on seasonal abundances
(salmon runs). Moreso, food preservation techniques meant survival in comfort.
Every low tide on the beach reveals a forager's all-season buffet of calorie-rich shellfish if nothing else.
Toddy describes the need for "caloric density." In this, the oily salmon is superior. The carbohydrate equivalent is cultivated by the Tlingit and Tsimshian on the mainland and the Haida off shore on Haida Gwaii. They are still growing a variety of of potato which is an exact genetic clone of a variety cultivated in Chile and Peru. Trading and raiding that far south in their 40' - 60' ocean canoes? Maybe the Russian traders? Maybe the Chinese traders?
I would dearly love to get my hands on some seed stock to grow and eat. Paleo gardening persists.
Clearly, many groups pushed inland and managed to survive to this day.
They had great pit houses for all-season habitation. Kitchen gardens are still cultivated.
Judging from the middens, they were primarily fish eaters. Great stone weirs to trap mostly rainbow trout.
The implication is that they had the skills for mass food preservation.
What amazes me is mariculture = the deliberate landscape modifications to prepare beaches as clam and oyster beds.
There are middens of tens of thousands of cubic meters of oyster, mussel and clam shell to attest to their success.
I guess that they used the many thousands of years to get it right. All over the UK as well?
Even in this day and time all the "flat" spots are still used. Just don't take more than you need.