Road ecology blog: Hollow dirt road (erosion), near Casca d'Anta, Parque Nacional da Serra da Canastra, Minas Gerais, Brazil.
The road is much lower than the surrounding landscape. All the "missing" dirt has eroded away. Part of the "missing dirt" is likely to have ended up in a stream or river.
Click here for more images of erosion and erosion control measures.
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Hollow dirt road (erosion), near Casca d'Anta, Parque Nacional da Serra da Canastra, Minas Gerais, BrazilHollow dirt road (erosion), near Casca d'Anta, Parque Nacional da Serra da Canastra, Minas Gerais, Brazil