Full Cave (447)

Shade some cells to get a valid Cave solution:
Leave some cells white to form a single orthogonally connected shape. Shade all the remaining cells. All shaded cells must be connected to the edge of the grid through other orthogonally adjacent shaded cells. The remaining (unshaded) numbers indicate the number of cells inside the shape that can be seen from that cell, including the cell itself. Cells do not see past shaded cells.

Reference: WPC 2016 (65)