Ushi No Tane - Harvest Moon

anyone have a list of event of how and when to get rid of those big rocks blocking the way?

I haven't seen one but you get the events after a tunnel expansion. You have to be on foot to trigger the events though, so no riding.

There is only one of the big boulders that won't be broken by tunnel requests. It is the one on Bluebell side, and it will only be broken after you get mine requests.

I have heard that the first 3 events are unlocked according to the tunnel expansions, but I have had the tunnel expanded for almost 2 seasons, and still nothing... And I rarley ride my horse. In any case, I have deduced that the times are random, so no worries!

I think you have to be walking in the right direction to get the events. So, like if you usually go over the mountain toward Konohana and through the tunnel toward Bluebell, you might not get them.

Also, I think they only happen during the day (like before 6pm maybe?), when it's sunny, and I'm sure they never happen in winter.

I'm pretty sure that if you walk into the right screen, in the right direction, with the right weather, at the right time and season, the event happens every time. Not 100% sure, though.

for me one of the big rocks disappered after a short scene with a bear running in and crushing them and that was during fall after my first tunnel extension during the morning crossing the bridge on the moutain region outside konoha

Bear events won't happen on winter because they will be hybernating. Other than that I always managed to trigger them around 4 PM.

I trigged two of them yesterday walking from low konohana to mid mountain. If you get one, go back to low then re-enter mid. I think it was around 11am.

I have two tunnel expansions and I give the bears honey when I see them