If you mean for the walkway, it's just a couple inches of compacted washed stone...leftover from the shop floor where they told me to buy ten ton and only used five. They didn't believe me that I already had the flippin' thing level within an inch all around. LOL
I got the 12' section closest to the house done today. Unfortunately, I got a late start because it was supermarket day this morning plus a bunch of time doing thing at our older daughter's apartment because she had knee replacement surgery with extra ligament work last week and we're doing a twice a day dance for that. The end results was I finished up at about 20:00 getting the final 3' broomed and then got the whole thing tarped because of the expected rain later tonight and tomorrow. The HFT mixer worked well and I'll probably get most of the cost back when I sell it later, given I bought it on sale. Totally worth it, especially working alone. No way this could be effectively done with hand-mixing.
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The most expensive tool is the one you buy "cheaply" and often...