Next time, try to mention it below ~.~ i thought you were telling me the description is wrong :|
I start with raising and bending over in 90 degrees position knee of my right leg.As I raise up my right leg I start to focus chakra into it. When I feel that I've focused enough of chakra I stomp it then I start to release this chakra into the ground and by doing so I create a long tunnel between me and the dummy. When I've finished with channeling chakra into the ground I start to gather katon chakra in my abdomen. As I've gathered and molded enough of katon chakra I start to channel it towards my gullet and mouth in which period I am heating it up. As katon chakra comes to my mouth I push it a little bit forward towards my lips and release it as I am releasing chakra towards the tunnel that I've just built I use nature as well as shape manipulation to create fire that I breath out from my mouth. When fire chakra comes in contact with the earth,earth starts to boil down creating super hot stone debris. As I make single handseals I release super hot stone debris substance from the end of the tunnel and reaches the dummy burning the piece of wood :[
Advantages;
It can be up to long range which means no matter how long the range between you and your opponent is you can use it. Then power of super hot stone debris when it erupts is strong and it is hot meaning it can make severe burns.
Disadvantages;
once you create a tunel you can not change it's direction so if your opponent moves from the place he was at that moment you will be left with one jutsu wasted. User can pretty much just choose where the super hot stone debris is going to erupt if that is going to be mid range,short range of long range,but the direction of tunel never changes
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This was a little fun technique, I had almost memorized al the things for B-C-D ranks xD