In spite of many successes in the field of cosmology the Universe is still mysterious. We know very little about the early epoch of its evolution. In addition, several large-scale phenomena are still unexplained: e.g. large scale anomalies in the Cosmic Microwave Background (CMB) radiation, coherent bulk flow of matter on ~100 [Mpc/h] scales etc. Explaining and understanding these phenomena is a challenge. Recently it was shown (Itzhaki 2008) that if it existed, a massive Pre-Inflationary Particle (PIP) would lead to formation of a giant spherically symmetric cosmic defect with a greatly extended gravitational potential. I will discuss the signature which one such defect imprints in the CMB and  the  character of peculiar velocity field it induces. The defect manifests itself on large cosmological scales, and thus is a good candidate for explaining the cosmic anomalies. The most intriguing property of the defect is that it is capable of inducing coherent bulk flow on large scales without leaving any prominent signature in the CMB spectrum. If the defect is observed, it will tell us a great deal about the early universe and will
probably resolve some mysteries of contemporary cosmology.