reach the last floor of the 3rd mine and go to the excavation site at 8pm, don't leave your hammer in the tool box at home cuz you need it to open the 4th mine.
the mine is open in winter, the 8th to the 30th :D ENJOY!!
go into the mine after 8:00 pm
There is nothing special there. You just go back to the top. But once you reach the bottom you'll be able to open the fourth and final mine.
In the mine you can drop down floors by walking over invisible holes that open up when stepped on. But it is only in the third and fourth mine where you can drop 100 floors at once. In the second mine the most you can fall is 20 floors and in in the first mine you can only fall one floor at a time.
You have to reach the bottom of the third mine AND activate Keria's black heart event. Be sure to deliver the curry, too. When those requirements are met, activate Carter's mine sequence to smash open the tunnel.
Defeat all monsters on the bottom floor, then the barrier will open.
11am
You have to have passed the first two mines first and then go into the mine before 8am or after 9pm and you will see the same event you sawto open the first two mines.
I'm not quite sure, there's an event for it where Carter asks you to use your hammer to do it. If you want to know the exact time, type hm7 or Ushi no Tane 7on google It has EVERYTHING you need to know on Harvest moon.
If you mean mines, just copy and paste this and it will lead you right to where you need to be. The rest of the site also helps you with everything on Harvest Moon Ds cute:http://www.fogu.com/hm6/chan5/mining.phpI do know, that there is a cave behind the waterfall near the mining area and Harvest Goddess Pond. To get back there, you have to destroy the rock with the legendary sword. To get the legendary sword you must get to the bottom of the 2nd mine which is 255 floors. But its easier than it looks. To know how to get the second mine (and the first, third and fourth) just copy and paste the link up there.
yes
You need to have a child.