Raycast Info

Hello everyone,

I have made this model, with the points, as the instance points, in Geonodes. I also want to have points on the bottom of the object, which will be related to the points in the pic. I am thinking a raycast from the points in the pic, to the bottom of the mesh (can be separated from the rest). Is this the best way? What should i rather use? Does anyone have any good raycast tutorials? Thanks in advance.

are you looking to drive some spikes to hold your rail in place?

raycast would work, but probably be overkill. what is the ultimate use case?