It was the first national park in the British Virgin Islands to preserve and reserve the remaining forests and its adjoining watershed areas.

[2] The tall, volcanic[5] mountain range acts like a natural barrier, blocking dry winds and strong sun shine.

[3] A small area of 29.5 acres (11.9 ha), which is generally of rocky terrain, retains the original forest species as they could not be cleared for agriculture.

Sir Francis Drake Channel of outlying islands from Virgin Gorda to St. John can be seen by a short detour along the Joseph R. O'Neal Trail to the peak.

The Mahogany Forest Trail, which goes up to the top of Mount Sage, was established by Joseph Reynold O'Neal, the founder and first Chairman of the National Parks Trust.

[7] Typical of rainforests, flora includes the "stinking fish" or bullet wood (Mimusops elengi),[6] Caribbean and Honduras mahogany trees (Swietenia mahogoni, and S. macrophylla).