The ponds are named after an indigenous Tsou legend involving two sisters who sacrificed themselves for their community.
The Elder Sister pond covers approximately 160 square meters, while the Younger Sister pond is about 20 square meters.
The pavilion located in the middle of the ponds is constructed on the trunk of a large, fallen red cypress tree.
The water levels in the ponds are maintained primarily by natural precipitation and seepage from the surrounding forested slopes.
The area is home to various endemic bird species, including the Formosan whistling thrush.
Sister Ponds are two high-altitude mountain lakes situated within the Alishan National Forest Recreation Area in Taiwan. The two ponds, designated as Elder Sister and Younger Sister, are connected by a series of wooden boardwalks and trails. Elder Sister is rectangular with a larger surface area, while Younger Sister is circular and smaller. The surrounding forest features dense stands of cypress trees, many of which are ancient and display unique growth patterns from historical logging. A pavilion built on logs sits at the center of the ponds, providing a resting point above the water level. The area is characterized by high humidity, which frequently results in lingering morning mist. The ponds were formed by natural depressions that collect rainwater and mountain runoff. The surrounding vegetation includes diverse species of high-elevation flora adapted to the cool climate of the Alishan range.
The wooden pavilion located in the center of the ponds, especially when mist is hovering over the water surface.
Bring a light waterproof jacket as the area is frequently misty and experiences rapid weather shifts.
Wear sturdy, slip-resistant footwear as the wooden boardwalks and surrounding trails can become damp and slippery.
Start the walk early in the morning to experience the ponds before the larger tour groups arrive.
Do not attempt to feed any wildlife or disturb the pond water, as the ecosystem is strictly protected.
Stay on the designated wooden boardwalks to protect the delicate mountain wetland ecosystem.
