A challenging & beautiful box which is reminiscent of the southwestern US Adobe Pueblo dwellings built into caves; hence the name. You must align the 5 side arms to the correct position in order to allow the cover to slide off. The arms slide left and right. Each arm has 10 possible positions so the number of possible combinations of positions is quite large (10 x 9 x 8 x 7 x 6 = 30,240). A typical solution time is 30 to 40 minutes. Occasionally done faster, but more often than not people give up and look at the solution.