The spring sits on the southern bank of Jinan's old city moat, close to its southeastern corner. Water rises from a moderately deep circulation through the Ordovician karst aquifer that underlies the entire city -- the same geological system that feeds the famous Baotu Spring and more than 70 other named springs in Jinan. What distinguishes Black Tiger Spring is its setting. The water emerges from a water-filled limestone cave carved into a steep cliff face, and from the cave mouth it flows through three carved stone tiger heads that serve as spouts. The tigers gape wide, and the water pours from their mouths in thick streams, splashing into a rectangular pool before overflowing into the moat itself. Locals gather here with jugs and bottles, filling them directly from the spring's outflow -- a daily ritual that speaks to both the water's quality and Jinan's deep attachment to its springs.

The Ming dynasty poet Yan Bizeng described the ancient layout of Black Tiger Spring in verse, capturing a time when the site was wilder and less manicured than it is today. His poem preserves a picture of the spring before the carved tiger heads, before the stone railings, when the black rock that gave the spring its name still crouched at the cave entrance and the water's roar was louder, rougher, uncontrolled. The name itself carries a double meaning -- derived both from the rock's tigerlike shape and color and from the sound of the water surging past it. Even without the original rock, the spring retains a vitality that the more serene Baotu Spring does not. Where Baotu is placid and reflective, Black Tiger is theatrical and loud.

Just east of Black Tiger Spring, on the opposite bank of the moat, stands the Liberation Pavilion -- a 34-meter monument completed in 1986 to mark the spot where the People's Liberation Army breached Jinan's city wall on September 24, 1948, during the Battle of Jinan. The juxtaposition is striking: an ancient spring whose water has flowed for millennia sits meters from a monument to a battle fought within living memory. The moat connects them, as it connects so much of Jinan's old city. Once a defensive barrier, the moat is now a public promenade where residents walk, exercise, and fill their water containers from the springs that feed it. Black Tiger Spring, ranked second only to Baotu among the city's springs, anchors the eastern end of this waterway with its three roaring tiger mouths -- a spring that has outlasted every army that ever fought for the city surrounding it.