Logic Masters Deutschland e.V.

In my previous puzzle, Serpent with a lisp, I played around with hidden thermometers in a snake puzzle. I liked the idea enough to apply it again: this time in a cave puzzle and using some different logic.


Rules
Standard sudoku rules apply.

Cave: Shade some cells in the grid. These shaded cells are wall cells; the unshaded cells are cave cells. The cave cells form a single connected cave. Single and connected wall cells form walls that are connected to the edge of the grid. No 2x2 area is entirely wall or cave.

Dead ends: The white circles are all the dead ends of the cave: they are cave cells with only one adjacent cave cell. Digits in these circles indicate how many cave cells (including itself) can be seen from that cell. Walls obstruct vision.

Thermometers: In every straight line of connected cave cells the digits are in increasing order.

Killer cages: Digits do not repeat within cages. The cave cells in each cage sum to the given total.

Connection and adjacency in the above description is strictly orthogonal.


Link: Play on CtC