A5o in LP. Table is full of rocks so I'm about to leave when the blinds hit. So i'm making some laggy raises before i leave. Folded to me and I 4x it. Button calls.

Flop 56T rainbow

I make a 3/4 cbet and he calls.

Pot is now about 48$.

Turn is an Ace. Give me Aces and fives. I lead in for 35$, and he calls again.

River is a king. No flushes. only straight is JQ. I check (?). He bets 70$ pretty quickly. Can I call this?

Don't like the check at the end. He could either have a big hand or a bluffed draw with something like 78...

Tough spot you got yourself into. If villain is a rock, you should probably fold. What are you ahead of? He should have a set or better 2 pair to make this play.

That said, I am a donk and probably call unless I have a read that he will not bluff here.