Maybe the order is different for you than it is for me. There seems to be 10 photos per page on my screen and the second bucket and the propane tank photos are on page 7 out of 8 pages. The propane tank photo would be about #76, I think. and the second bucket #74. I think septic tanks are always underground, so I was looking for an abandoned tank that had been exposed and planted. Sort of like an abandoned swimming pool that's been converted to a garden situation. I've wished the old concrete cellar that once had logs for the top that's at the old house site here was in the yard. Lots of possibilities on using that thing!