surf behind the valley windworks.
underground using explorer kit
try the game corner
thunder bolt was obtaind in the bingo event vary rare tm .
TM25 Thunder can be found at Lake Valor, or you could buy it at the Veilstone City Department Store for 5,500 PokeDollars.
if you dig underground you'll eventually find thunder stone then after a while you'll find shiny stone ;^)
You can get the thunder stone by going underground and digging for it in Pokemon diamond/pearl ( the thunder stone , fire stone, water stone, and the leaf stone is very rare, so good luck!).
you can find a thunder stone underground digging them up............i rock w!ll m@l0n#
you do not find dialga in Pokemon pearl
you must either find one in the underground which is really difficult or find the one in sunnyshore city near the light house.
you have to dig underground to find them and there is one in sunnyshore in dont know where though then how do you know its in sunnyshore Butthe quickest way is to go undergrund and dig
Trade with Pokemon Pearl or Pokemon Platinum
the best Pokemon you can catch in Pokemon pearl is heatran