So I've been rewatching Korra again and I still can't help it, but in this episode, why didn't Bolin just earthbend the walls that is behind them? It is not fricking metal! Man these guys ain't thinking outside the box. :rolleyes:

I can’t tell what scene that is just from the picture
That is from Season 3 Episode 10 of Legend of Korra. Here is another screenshot in case you need a refresher. It is the episode where Zaheer sucks the air out of the Queen. And just look at that. They are surrounded by rock walls which looked to be easily earthbendable.