Here in the UK we have no wilderness even in the highlands the imprint of man is present the lynx, bear and wolf have gone, and the wildcat is struggling. The deer forests are mostly treeless heather, with small pockets of the Scots pine that once covered much of the highlands.
So it is encouraging that there is talk of re-wilding restoring wilderness. Of course it is a can of worms. You cannot restore the wilderness as it was in Devonian times (underwater for much of central Scotland) or as it was in the ice age (buried under glaciers). Bur neither can you reintroduce just one species, like the wolf. Everything is connected.
They say that the true mark of greatness is an old man planting trees he knows he will never live long enough to sit under their shade. So it is with re-wilding. We need to think long term. If we get this right our great great grandchildren might well thank us.
A very large area is needed. Even better, several large areas, connected by corridors among which animals can move freely.
Reintroducing the beaver has caused terrific objections, so you can imagine the difficulties with the highly emotive big bad wolf. In practice, I think we will reintroduce the lynx before the wolf as it does not carry the emotional burden.
Perhaps I am unrealistic (and you should remember my professional training is in medicine, not ecology) but I would love to see wilderness re-established in some of the highlands. Instead of, say, 50 000 acres, we should be thinking square miles perhaps 1000 square miles would be easily self-sustainable of re-established Caledonian Forest with large herbivores and large predators (certainly wolf, wildcat and lynx, and I personally have no problems with bears too) and no roads, no over-flying and no mechanised access. It might take a century or more to re-establish, and will only happen if people want it. But when you think of our deep need for wild, unbroken country, I believe it is worth it.
A small fenced off area, with only some of the ecosystems species, and only open to paying guests, is not re-establishing wilderness. It is opening a safari park. But I recognise it could lead on to better things, and at least the laird concerned has vision.