Devonian scoria, a porous volcanic rock formed during the Devonian period, has been a favored material for outdoor sculptures due to its durability and striking texture. Among the most famous Devonian scoria outdoor sculptures is "The Guardian" in Iceland, a massive piece carved to resemble ancient mythological figures. Another notable work is "Echoes of the Earth" in Australia, where artists used the rock's natural crevices to create a sound-responsive installation.

In Norway, the "Stone Sentinel" stands as a tribute to Viking heritage, its rough-hewn surface evoking the raw power of nature. Meanwhile, Canada's "Fire and Ice" sculpture in Alberta blends Devonian scoria with glacial motifs, symbolizing the region's geological history. These sculptures not only highlight the versatility of scoria but also serve as enduring landmarks, merging art with the earth's ancient legacy.

Each piece reflects the unique characteristics of Devonian scoria, from its reddish hue to its lightweight yet sturdy composition. Whether as standalone monuments or part of larger art trails, these sculptures continue to captivate audiences worldwide.