A gap in a chart is essentially an empty space between one...

A gap in a chart is essentially an empty space between one trading period and the previous trading period.
You will often hear that gaps will always fill,(like some of the posters say here. However, this doesn't always happen.
There is quite a comprehensive explanation of the different types of gaps on investopedia.com.
For what it is worth Lynas has great potential but as with all popular shares will be played by the big boys for their pocket money.
Whether it will continue down to the rising support line, or just to the breakout support depends on how the big boys want to play it...;-)