The area of Los Estoraques Unique Natural Area is 562 square kilometers.
Los Estoraques Unique Natural Area was created on 1988-08-24.
Ahihi-Kinau Natural Area Reserve was officially established in 1973 to protect the unique and fragile ecosystems found in the area, including volcanic features, lava fields, and nearshore marine environments.
The area of Tandy Hills Natural Area is 647,497.027584 square meters.
The area of Johnson Run Natural Area is 874,120.9872384 square meters.
The area of Sielbeck Forest Natural Area is 1,558,039.7226240002 square meters.
The area of Tideman Johnson Natural Area is 31,120.325888256004 square meters.
The area of Pinnacle Natural Area Preserve is 2,881,361.7727488 square meters.
The area of Union Bay Natural Area is 202,342.82112 square meters.
The area of Cowbane Prairie Natural Area Preserve is 254,951.95461120002 square meters.
The area of Hill Country State Natural Area is 21.728 square kilometers.
The area of Goshen Pass Natural Area Preserve is 3,787,857.6113664 square meters.
The area of Chestnut Ridge Natural Area Preserve is 942,917.5464192 square meters.