Pokémon Diamond and Pearl/Oreburgh Gate

'''Oreburgh Gate is a connecting cave for Route 203 and Oreburgh City. It has two floors but the basement can't be accessed until you can use HM06 Rock Smash outside of battle.'''

1F
Almost immediately to the left of the entrance there is a hiker who will walk down and give you HM06.

The north path leads to the basement but is current inaccessible since you cant use Rock Smash outside of battle yet but that will be resolved after you beat Roark, Oreburgh's Gym Leader.

Take the east path and you will run into two trainers which are avoidable by going behind their backs. At the end is the exit to Oreburgh City.

Trainers

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Pokémon found
Here is you first chance to get a geodude and a psyduck(only in Platinum). You can also get a zubat here if you didn't go through Route 203 at night.


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B1F
Unless you want to make multiple trips, only come here once you have a bike, Rock Smash, Strength,and Surf.

Go down the stairs after the entrance and go right and break some rocks to find TM70.

Make your way back to the stairs and now break the rocks to the left. There is a biker in the middle of the breakable rocks that explains that the jumps here can be only made with a bike in the 4th gear. Go above the ledge to find a stardust.

After breaking the rocks and jumping up the slopes you will find TM31. You will then Surf west to find Veteran Grant. After you beat him go down the stairs push and break rocks to get an Earth Plate and TM01. I suggest using an escape rope, dig or teleport to get out.

Trainer

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Pokémon found

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Items

 * TM70 Flash - to the right of the stairs from the entrance behind breakable rocks.
 * Stardust - above the ledge to the left of the stairs from the entrance.
 * TM31 Brick Break - at the end of the slopes
 * TM01 Focus Punch - after the stairs next to Veteran Grant
 * Earth Plate - after the stairs next to Veteran Grant