Paleo Kathmandu Lake


Paleo Kathmandu Lake is the former lake which lied where Kathmandu Valley is today. Similar to the situation of Mexico City and Pokhara Valley, the valley where the lake once stood is densely populated, and highly vulnerable to both nearby and even distant earthquakes due to liquefaction and amplification of waves because of unsettled clay soil, specifically here called kalimata.

Tsunami

The deposits are interpreted as “tsunami deposits” in the paleo-Kathmandu Lake that appeared at around 37-38 ka.

Religion

This lake is said to have been drained by Manjushree Bodhisattva, a Buddhist saint, by cutting open an outlet in the southern rim of the valley. As a result, the valley that was created was fertile and people started cultivating here and building their homes here. As the valley grew, Manjushree is said to have worshipped Swayambhu on the hillock where the present Swayambhu temple is located.