With respect to Sendoff Spring; it resembles this by coincidence:
>Lake of No Return (Naung Yang in Tai languages) is a body of water in Myanmar, lying in the area of the Pangsau Pass (3727') on the India–Myanmar border south of Pangsau (also called Pansaung) village. The lake is 1.4 km in length and 0.8 km in width at its widest part
>At least three more stories explain the name. The second has it that a group of Japanese soldiers returning from battle lost their way and ended up at the lake. There, they were stricken by malaria and died and hence it is called the Lake of No Return.[citation needed] According to a third story, US Army soldiers, working on the Ledo Road, were sent to examine the lake and got trapped by the undergrowth and perished trying to escape.[5] A fourth story says this "is the 'lake of no return' [because] retreating British troops in 1942 got lost in quicksand."[6] Adding myth to legend, one author claims he has encountered the name on a document written by one of the Ten Lost Tribes of Israel, which he claims still hides out in the area.[7]
Myanmar
>Regarding the lake, Myanmar residents believe that the region and the insect are a spirit creature, believing that the giants are habitats, and they do not make fish searches. The ancients said that large-scale dragons were found, and locals believed that there was a dragon's land at the bottom of the lake's surface.[1]
India
>Indians also believe that the lake cares for dragons as it is about the demons; the dragon that cares for it is white, and that the dragon harms those who damage the region. Additionally, once a year, the Indians even referred to the Indian insect as "The Bermuda of India."[1]
