I don't think that there is a "krokka tunnel" in pokemon ranger guardian signs!
In the croca tunnel
get 3 evoltions of makuhita and crush them
get past the rampodoses then there should be a tunnel go in it at the back is darkrai... by joel.g
In front of the Ranger School, you will see a tunnel with a rock in front of it. Destroy the rock and in the cave, you'll find a tangela.
In the ranger net you have to catch three legendary pokemon. 1-Deoyxs-In the tunnel connecting Ring town and Fall city 2-Celebi-In lyra forest 3-Mew-In the forest near Summerland
Regirock is at the Sekra Mountain Range. Regice is in Panula Cave. Registeel is in the Krokka Tunnel.
The Krokka Tunnel entrance can be found through a number of paths. The main entries are in Lyra Forest, towards the end of the forest, while the other entry is on East Road which is just West of the Fall City Ranger base. The Krokka Tunnel can also be acessed by traveling deep into Panula Cave which is South of Wintown.
that Pokemon is not in Pokemon ranger, Pokemon ranger shadows of almia, or Pokemon ranger guardian signs
Pokemon Ranger shadows of almia is a newer Pokemon ranger game
Pokemon Ranger was made before Regigigas, so there is no Regigigas on Pokemon Ranger.
There are 3 kinds of Pokemon Ranger games, the original Pokemon Ranger, POkemon Ranger:Shadows of Almia, and Pokemon Ranger: Guardian Signs. Hoped this helped!
You cant get Pokemon from Pokemon ranger to platinum!