ten thousand yojanas high — SB 5.16.19plugin-autotooltip__small plugin-autotooltip_bigŚrīmad Bhāgavatam 5.16.19

Similarly, the fruits of the jambū tree, which are full of pulp and have very small seeds, fall from a great height and break to pieces. Those fruits are the size of elephants, and the juice gliding from them becomes a river named Jambū-nadī. This river falls a distance of 10,000 yojanas, from the summit of Merumandara to the southern side of Ilāvṛta, and floods the entire land of Ilāvṛta with juice.