There is a wish script at [ext/rtree/viewrtree.tcl][1] that might help you with this. [1]: https://sqlite.org/src/file/ext/rtree/viewrtree.tcl To run it, I had to comment-out the "load" command at the top of the file and uncomment the nearby "package require". Then I observe that it only works with 2-D r-trees, which I don't have any of easily at hand, so I cannot say whether or not the script still works. But it is a start!