Replacing plastic

Today, Lake Baikal has become a zone where it is possible and necessary to implement projects to replace plastic. Scientists suggest using composite materials instead. As legislative initiatives are worked out and new materials are tested, this innovative policy can be scaled to all protected areas in Russia, Kolobov said.

The gateway to the lake is the city of Irkutsk, a stop on the famed Trans-Siberian Railway, which many visitors on relaxed schedules use to arrive and depart. But still, the city itself worth a visit for a day or two.

Irkutsk is the largest city in Siberia with a population of over 600,000. There's 19th-century architecture, stunning churches and great places to eat in the city.

Irkutsk's weather in winter sees temperatures of around -20 C. The weather gets cold enough in this region to make Lake Baikal the most impressive frozen lake in Russia.

The city is full of beautiful and extravagantly decorated orthodox churches. Krestovozdvizhenskaya Tserkov' and Spasskaya Tserkov' are two churches especially worth a visit.

Another top attraction is the Central Market. This huge market sells everything from fresh fruits and vegetables to clothes.

The symbol of Irkutsk is the Babr which is an old Russian word meaning 'Siberian Tiger'. The tiger has been on the city's coat of arms since Irkutsk was established in the 17th century. There's a sculpture of the Babr in a small square by Lenina Street.