The QM is saying that a particle in some potential pattern will have a wavefunction that describes the probability to find the particle. And then it also said that observation will make wavefunction collapse into measured value. For example, the electron in an atom will be in one position after measuring its position. But I have a strange idea about this thing. The situation is that now there is a particle with energy E. There is a potential barrier in front of it which has potential V that is V>0. Also, 0<E<V. This means there can be quantum tunneling. Now if the particle can observe itself, what will it see when it performs quantum tunneling?