Im still new to cycling, so my apologies if this is a stupid question.

I was riding very slowly on a trail with a lot of rocks, projecting up to 3" above the ground, and heard a loud noise, a sort of Sproing sound. Thought a spoke had broken, but everything was fine.
So, do wheels just make this noise, or was something bad going on?
The bike is a Motobecane 29" hybrid, 40mm tires, (32H DA17 DOUBLE WALL, Aluminum ALLOY, 700c) rims