Igor Doroshin, the main constructor of the base camp of the Tunguska99 expedition.

I. K. Doroshin organized many expeditions in the Tunguska site and participated to different researches. His researches (together with V. A. Vorob'ev and A. G. Il'in) on the tree branch lesions have lead to the compilation of a Catalogue (750 kb), that can be freely used by other researchers.