(a) The free radial infall of a particle from the infinity to EH sphere (), which is similar to the Schwarzschild geometry of BH. Crossing the EH sphere, a particle continues infall reaching finally the surface () of the stable SPC. (b) Approaching the EH sphere (), the particle concentration increases asymptotically until the threshold value of protomatter. Then, due to the action of cutoff effect, the metric singularity vanishes and the particles well pass EH sphere.