I know it's childish, but look at this wikipedia entry from 'Russian explorers' and tell me Kropotkin is not a cool dude.
I couldn't find where the settlement in Irkutsk Oblast is (but I'll be IN the Irkutsk Oblast... ), nor where the inactive volcano is in Buryatia (but I'll be IN Buryatia... ).
I've got some set dates and times for trains.
25th July leave Newcastle 8.35am
27th July leave London 5.25am
(Some time in Paris, then onto Lyon then thru Switzerland to Dresden then Berlin).
4th August leave Berlin 3.22pm
6th August arrive St.Petersburg 6.13am
Some time in St.Petersburg.
9th August leave St.Petersburg 4.13pm
10th August arrive Kazan 1.55pm, then back on a train 7.55pm
11th August arrive Yekaterinburg (bit of an accident, this stop, I think I made a mistake buying tickets!)
Some time in Yekaterinburg.
Very late 12th August (actually 1.31am 13th August) leave on the posh Rossija train.
15th August arrive Ulan Ude 1.32pm
Hopefully head to Chita and back (but I may be too sick of trains & need a break).
18th August, meet at the famous Lenin's head.
Nowt else booked, nor likely to be, after this date.