Contortion Wiki

अञ्जनेयासन (Sanskrit: Anjaneyasana, Crescent Moon)

A front split with the front knee bent to support weight on the front foot, and the rear knee and shin. May be a minor backbend component in an arched spine. Arms may be raised to follow the line of the spine.

Alternatively, weight might be supported by the back foot instead of the knee and shin.

https://en.wikipedia.org/wiki/Anjaneyasana