Because the women who were approaching the garden at dawn worried about how to get inside the tomb to embalm the body with their spices, we know it was no small rock. And because they wanted to get IN, I think I've always thought of the "stone rolled away" in terms of our access to Jesus. But primarily the stone was removed to give HIM access to US. He was the first one who crossed that threshold, coming OUT.
And I find that encouraging today. God is willing, and able, to blast away anything that might stand between Him and His will. Bethany posted on Easter using a phrase from a Mundri saint: God will not be defeated. Nothing will stand in His way, tons of stone, or hearts of stone, He will always break through to get out into the world, out among us, to find us, to speak and touch and heal and change. To make all things new.