At some point in time price will return to this demand area indicated by the orange line. These are areas of demand and they represent the orders that did not get filled. As a result price shoots straight up as indicated by the first 3 green bars ascending from the orange line. This is a sign that price will return to this orange lined area at some point so that some of the unfilled orders may get filled. When price does return, the other question is will price hold presenting a buying opportunity or will price fall through? Either way price always returns to demand areas and it's just a question of when. This type of chart set up you will see often.