This is a gravestone from the 1770s in the churchyard at Rotherfield (Sussex). I've seen the design before (did they have pattern books for monumental masons?) but this is a particularly well-preserved example.
The deceased is rising from his/her sarcophagus in the centre. To our right is Christ- also newly risen, holding a cross, with more people being resurrected at his feet. To our left an angel is blowing a trumpet and a tower is toppling.
Here are some details