Complex sentence: The 3,830-acre (15 km²) West Pine Plains Natural Area preserves a pygmy forest, a globally rare stunted forest ecosystem consisting of pine and oak trees that reach a canopy height of as little as four feet at maturity.
Split into simpler sentences: The 3,830-acre (15 km²) West Pine Plains Natural Area is a globally rare stunted forest ecosystem, known locally as the Pygmy Forest. It preserves a portion of the pine plains, and supports an extensive forest of pine and oak trees that reach a canopy height of as little as four feet at maturity.