Tarmac rally with unfortunate end

Went out for a quick tarmac run today with Jannik, a friends son who is quite new to R/C but already highly addicted! After some battery packs with great fun on our preferred tarmac track, Jannik decided to have a go close to the nearby turf. Well... as you can see in last pics down, not all chunks of topsoil revealed as what they appeared to be....