Open the map and add this to the map LUA script.
H55_SPMapDailyEvent = 1;function H55_SPMap_DailyEvent()sleep(5);@OpenCircleFog(0, 0, 0, 9999, PLAYER_1);sleep(5);@OpenCircleFog(0, 0, 1, 9999, PLAYER_1);end;
It should open the map (top and underground) for player 1 on day 1 (try skipping a day if it does not happen on day 1)