Taking into account the novel The Mushroom Picker there are a lot of kinds of the word "frontier". Their meaning depends on a question: what we would like to express using them. Not only does the Russian author write about space bor-ders between countries but he considers mental barriers as well. In his opinion, the latter ones are drastically more dangerous because they often lead to arguments and even wars between nations which have no knowledge and understanding of different cultures. The main character of the novel shows the reader both Soviet and English reality. The capital cities of these countries - Moscow and London - are presented critically. The citizens of both countries do not trust each other, and do not even try to know anyth...