It's hard not to notice the Jaakko Pernu 'Timberline' sculptures due to their massive size. The artist's inspiration comes from the "the influence of humans on nature -- the influence of nature on humans," according to his website. He predominantly uses willow branches to carefully form these geometric shapes.
His influence is evident upon looking at these photographs. For example, he crafted a house, a chair and an umbrella, which are uncommon things you would find in the wilderness. It reinforces the message that as humans, one utilizes nature's resources to build material things.
What makes this collection so eye catching, besides the fact that they are enormous, is his choice of placement. By randomly placing his wood sculptures in parks and empty fields, he is able to share his art and message effortlessly.