Iceland is often perceived as a treeless land; however, this is not because the Icelandic climate is unsuitable for trees. Rather, the trees in Iceland were once extensively logged. My research focuses on the mutual reshaping of natural and social landscapes, from an empty, uninhabited island to a degraded, owned landscape, creating what seems like an immutable social order. Over the generations of settlement, Iceland has transformed from a wilderness rich in forests to a landscape that is virtually treeless and eroded.The transformation of Iceland's environment from woodlands to grasslands is not just a shift from pristine natural landscapes to degraded ones. Instead, Iceland's transformation is the result of humans intentionally altering the land, driven by a massive logging effort underpinned by Icelandic society and economy. This is closely linked to the changes in the landscape associated with the medieval Icelandic monastic system, where church-owned woodlands were overexploited, and monasteries cleared birch forests for fuel and pastures. Today, birch coverage in Iceland is less than 1%. It wasn't until Iceland began to undergo industrial transformation, with livestock farming no longer the mainstay industry, that Icelandic society recognized the crisis of the birch trees and started advocating for the planting of birch, leading to an increase in their numbers. Birch trees, as ancient native species of Iceland, seem closely related to the changes in Icelandic societal patterns.The concept of "trees" might be a common one in our minds, yet a century ago, Icelanders had barely seen trees, and their concept of "trees" was very vague. This project aims to enhance Icelanders' understanding of "trees" and, at the same time, demonstrate how tree planting can aid environmental restoration and combat future climate crises.