On the eastern state line with Virginia, high peaks in the Monongahela National Forest region give rise to an island of colder climate and ecosystems similar to those of northern New England and eastern Canada.
Na liña estatal do Leste con Virxinia, os altos picos na rexión Bosque Nacional Monongahela crean unha illa de clima mais frío e ecosistemas similares aos do norte de Nova Inglaterra e o leste de Canadá.