We spent nearly two hours in the cave, partly because there was so much of interest there to engage our attention, and partly because of its delightfully cool temperature, which was a positive luxury after the extreme heat of the house, both by day and by night.  Before we left the cave to return to the house, Lotta half-jestingly proposed that we should stock the place with provisions, and use it as a place of abode whenever the heat became unduly oppressive.  Although the suggestion was made more in jest than in earnest, the idea became so attractive, when we proceeded to discuss it further, that on the following day we actually took steps to carry out the proposal.  We spent the best part of the day in stocking the cavern with provisions, rugs, and so on, to such an extent that we could easily have endured a week's siege there, had it been necessary, for a good supply of excellent water had been found percolating through the rock in a small side passage off the main cavern.  And thereafter we regularly spent a great part of each day in the cavern, always making it a rule to take with us a little more of everything than we really needed.