Caverna packing photos, as promised.
The player boards are placed in the bottom of the box and the furnishing boards are stowed vertically along one side.
The action boards are placed on top of the player boards. They tesselate quite nicely, though one 1x3 board has to stay on top.
These bags and small trays and the scorepad are inserted last in spare space up the side of the box, but are shown here in the box as I took the photos in unpacking order. One tray contains coins, harvest tokens and low level weapon markers (1-3, 4-5), the other contains food tokens and higher level weapon markers (6-7, 8-9, 10-11, 12-13, 14). The bags contain chits to replace large numbers of commodities and the action deck, which determines on what turn various actions become available.
Adding the bottom tray with the player markers, cavern furnishings by colour, single space meadows, ruby mines, and basic field/cave tiles. You can now see where the items in the above photo are kept when the box is packed.
Adding the top tray with the bank of all commodities plus ore mines, single space tunnels and large pastures.
The rulebook and appendix are then placed on top and that's it. The lid stands 6 or 7mm above flush with everything in, but if you know you're going to be playing with 5 or less you can remove a couple of player boards for a perfect fit.