How to develop ridiculously deep concentration for contemplation?

[electroBeam]

What are the ways to supercharge and boost contemplation to the max? 

I've heard that buddhist had occult practices for concentration, anyone have any respurces for that?

Anyone know highly effective concentration practices?

I'm going deeper in my practices and am experiencing a 'block' to going deeper. I desire experiencing psychedelic level consciousness through meditation(because its more permanent).