one underground path goes from celadon to viridian. there is a second path, but it is permanently closed.
. underground path in Celedon city
What i did was win V.S. Koga
After passing rock tunnel you will arrive in lavendar town go west from there until you reach an underground path go through the path to reach celadon city.
To get the HM cut in the Kanto region, you need to talk to the sailor in Vermilion City. He is located on the S.S. Anne, which is docked in the harbor. After defeating the gym leader, you will receive the Cut HM, which allows you to cut down small trees blocking your path.
go through the path from lavender town if it has water next to it it is the wrong path maybe have a few battles and go through the under ground tunnel WA LA! YOU ARE IN BEAUTIFUL CELADON CITY!
because there is no underground in Kanto
You cannot go unlock the Underground Path in HG/SS because you don't actually need it, since you can go through Saffron City.
Sorry. You can't. It was never intended to be passable
If you're talking about the one in Kanto, then I'll tell you. You have to get snorlax out of the way using the pokeflute channel on the radio. You then have to battle him. You can faint him, catch him whatever. You will then be able to use the underground path! Hope this helps!
There is no underground tunnel.
The Underground Path in inaccessible in HG/SS.
Because Snolax is blocking the enterance use the poke flute music (you might have to go to the radio tower to get this) on snorlax and he should attack after defeting the path/enterance is open
No Underground Path is in Vermilion City. There is one north of the city that leads to Cerulean City.
you can give it to a in an underground tunnel in kanto and he will give you the TM for explosion
In Goldenrod city and in the kanto region, outside of saffron city
you get this in the underground path
mr bean is not real because other people said the underground path on route 16 but there is no underground path on route 16.