Form-wise I like number 1 best, both shots are good. It is nice to see the grotto is it context but the wonderful texture of the rocks close up is great.
The vertical orientation, low view point adds a sense of veneration.
I don’t know what post-processing you did, the strong contrast works great, especially on the rocks.
For me there is one spoiler, there seems to me to be a halo around the grotto, which often can be see in overcooked HDR shots.
Others might find this adds to the atmosphere, but not me, – just my opinion.