बेंगल लेन्सनि केप्टेइन जेम्स फर्सितजों जेब्ला बे दुलुर महरनि सेरफांआ दिहुनजादोंमोन , बेयो 1857 नि सिगां नङामोन ।
It was not before 1857 when this saucer shaped valley was discovered by Captain James Forsyth of the Bengal Lance .