The natural gas ETF symbol UNG has lost an amazing 97% of its value since July of 2008. As precipitous as this drop has been, it seems to me that UNG is simply going to keep heading lower. Here's the long-term chart (which doesn't even capture the much higher prices from before):
Looking closer, you can see a "topping" (although I use the word lightly) pattern that presages a continued drop ahead.