Heihu Spring — Black Tiger Spring — is the second-most famous of Jinan's named springs and one of the most impressive for the sheer volume of water it discharges. Three stone tiger heads spout water into a wide pool, and the surrounding park along the old city moat has been developed into a pleasant canal-side walkway. The spring is at its most dramatic in rainy seasons when the water table is high.
The spring sits at the eastern end of the old city moat, which has been converted into a scenic waterway linking several spring clusters. Walking west from Heihu Spring along the moat brings you past more small springs and stone bridges, eventually connecting to the Baotu Spring area. The canal walk takes about 45 minutes at a leisurely pace and is one of the nicest ways to experience the springs as a connected water system rather than isolated tourist spots.