Complex sentence: My second trip clean round the world, to Saint Petersburg, a train to Moscow, the Trans-Siberian to Irkutsk, to Khuzhir, on Olkhon Island, Lake Baikal.
Split into simpler sentences: My second trip clean round the world, to Saint Petersburg, a train to Moscow, the Trans-Siberian to Irkutsk. To Khuzhir, on Olkhon Island, Lake Baikal.