Turn off the grid. Name this layer "mountain".
![Picture 5[6] Picture 5[6]](/./images/stories/TRONGrid_2FE2/Picture56.png)
Go to Image > Adjustments > Brightness/Contrast and put the brightness to the lowest setting, and the contrast to the highest setting.
![Picture 6[6] Picture 6[6]](/./images/stories/TRONGrid_2FE2/Picture66.png)
The quickest way to do this is to type (control/command + J). The new layer will be called mountain copy.
![Picture 7[6] Picture 7[6]](/./images/stories/TRONGrid_2FE2/Picture76.png)
Press (control/command + T). This will allow you to left click (with your mouse) and select "Flip Vertical". The following images are a before and after.
![Picture 8[6] Picture 8[6]](/./images/stories/TRONGrid_2FE2/Picture86.png)
![Picture 9[6] Picture 9[6]](/./images/stories/TRONGrid_2FE2/Picture96.png)
If you are still in the control/command + T view, then you will be able to click and drag the flipped mountains to the bottom of the document, and they should snap when you get it to the right spot. Click enter to exit this mode when you're done moving it.
![Picture 10[6] Picture 10[6]](/./images/stories/TRONGrid_2FE2/Picture106.png)
In your layers menu, select the 3rd button to the right (the white circle inside a gray rectangle icon) to create a mask, and using your gradient tool, create a black to transparent gradient from the bottom of the document to about 600px (the midline where the two mountain halves mirror each other.)
![Picture 11[6] Picture 11[6]](/./images/stories/TRONGrid_2FE2/Picture116.png)