The Symbolism of Left and Right

What is meant by Harry using his left hand to catch something (we can't see) and his right hand pushing down?











Could this be a clue that Harry has turned Voldemort's Dark Arts against him?

I'm not sure if the right hand is actually making contact with the rock, but if so Harry could be trying to gain leverage and climb through the rubble.

By the way, what is this rubble, and where are they?

One idea I've had is that they are in the so far unseen locked room of the Department of Mysteries, the often-called Love Room. So, what would the rubble be?

After the ministry found the site of the attack on the Potters, what did they do with the crime scene? Maybe they relocated the ruins of the entire house to this "Love Room"... so that the DoM workers could study Lily's greatest act of love....