Retrieving the Lat/Lon/Elevation from a raycast click

Hi, I’m trying to retrieve a lat/lon and height of where I have clicked on the generated map in Cesium.

Typically, I’d use physics ray cast to fire a ray to hit something, but this is just going to hit a unity world-space position. I need to know the Lat/Lon/elevation of where I clicked on the terrain.
Bing maps had something similar where I could click on the map and it would return the lat/lon/elevation of where I clicked.

Is this possible as I use it to calculate distances between a point a user has clicked and another point?