An island Clusters reversal is a chart formation where there is a gap on both sides of the candle after few days. Island Cluster reversals frequently show up after a trending move is in its final stages. An island reversal gets it name from the fact that the candlestick appears to be all alone, as if on an island. A key sign of a valid island reversal is an increase on volume on both the first gap, and then the subsequent gap in the opposite direction. An island reversal formation is often attributed to news driven events that occur in the pre-market or after-hours trading.