Beulah Bog lies in a series of four kettle holes and features an undisturbed bog with unusual plants more typical of northern bogs. Classical stages of ecological succession are exhibited in the bog including: a shallow bog lake dominated by water shield with white and yellow water-lilies and extensive floating mud flats; an advancing, quaking sedge and sphagnum mat between 25 and 50 feet wide; northern wet forest of tamarack and bog shrubs and; a wet open moat surrounding the main bog, dominated by wild calla and cat-tails. 

Beulah Bog is owned by the DNR and was designated a State Natural Area in 1975.