Okay, I made some screen captures and JPG saves to illustrate the process.

The first thing to know is that there are 18 levels to the temple, with a wider landing (15 feet instead of 5) on the 6th and 12th levels. And the second thing to know is that every level actually has three sheets:

(1) the main sheet for the level, with the stone fill;

(2) a sheet below it of a different color, because the beveling effect on the main sheet can cause weird pockmarks if it gets confused with the colors below the sheet with the beveling effect; and

(3) a sheet above the main one for the level for the sandy debris.

I called the sheet below the main one for each level of the temple "Inlay," because at one point I thought I might have brass or gold inlays on each level, but I ended up only doing that at the top.

Here's what Level 6 looks like with all three of its sheets on but all of the other sheets hidden (except for the 5th level as well as the stairs, just to provide perspective):

You can see erosion around the sides as well as some cracks (like from the stairs on the south side, as well as a little above the western stairs).

On the "inlay" level below, I put a polygon of solid color. I made it brown, because if it was the same gray as the stonework above, the beveling on the sheet above it would get confused and create weird pockmarks. But I also added a gray inside GLOW effect so that it look gray when it showed through the erosion:

Okay, here's how I did the erosion. First, I added the COLOR KEY sheet effect to that sheet, using the default magenta #6. (Also, it's important to put that sheet effect first on the list, before the Glows and Bevel and Wall Shadow).

This effect tells CC3+ that when it sees anything of that magenta color on that sheet, cut through whatever's on that sheet and instead show the sheet below it (in this case, the brown-with-gray-glow on the Temple Level 6 Inlay sheet).

I then used the fractal polygon tool to create small bits with that same magenta color, as well as the fractal line drawing tool to create the cracks. Here it is with the sheet effects turned off so you can see the magenta color, along with a zoomed-in version to see it a little better:

(There's a fractal crack in the stone above the fractal blobs. You can barely see it but it works when the sheet effects are turned on.)

When the sheet effects are turned on, anything on that sheet that's covered by by the magenta polygon will be cut away, showing instead whatever is on the sheet behind the stone. It doesn't matter if the color key cutout extends onto the white part, because there's nothing to cut away there and the sheet below would have been shown anyway.

Here's what the whole thing looks like with sheet effects turned off.

Crazy how powerful CC3+ is to be able render all of those effects to turn this mess into an identifiable ziggurat.

If anyone is interested, here is the FCW file. (It's slow loading when the sheet effects are turned on because of all of the nodes added by the fractal bits.)

Another revelation that will be obvious to more experienced cartographers here: the TEXTURIZE effect!

I have been wanting to use heraldic symbols stitched onto fabric to make carpets, table runners, banners...and I kept looking in vain for fabric fills. The Modern set includes different colors of carpeting, but it was a little too photorealistic to work with things like Dungeons of Schley.

Through trial and lots of error, I stumbled across the Texture effect and was able to apply it to both a color polygon and the heraldic symbol on top of it to create the effect of fabric with the symbol stitched on. I experimented with a lot of textures, but the one that seemed most "fabric-like" to me was the DD3 Hay_Dry fill. (If anyone knows of a fill that looks more like linen or other woven fabric, please let me know. Maybe there's a good one in an Annual that I have not yet purchased.) And of course, different fills can create the effect of looking like your sigil was painted on wood, or the cobblestone floor (though with more trial and error, I learned that some fills don't really translate well when used with the Texturize effect).

Anyway, here are some heraldic banners or carpets or table runners or whatever:

I just had an epiphany -- one that may be obvious to most of you but has tickled me to pieces.

Ever since I saw Ralf's two video demos of Marine Dungeons of using the brass inlays (which prompted me to immediately purchase the 2021 Annual), I have been obsessed with putting in brass inlays wherever I can get away with it. I even did one in my recent Sun God temple which was in a Mike Schley style, only I used a goldleaf background from Sue's Parchments with a crude, hand drawn depiction of the sun.

I have wanted to do more inlays in everything, but I am not an artist. But it suddenly occurred to me: Sue's inlays are vector images, and CA15 Heraldic Symbols (from Annual Volume 2, 2008) are vector images, and some of those vector symbols are varicolor....

So I experimented, and it worked! Upper left is one of the vector images from Marine Dungeons, just as an example of how it's supposed to work. Upper right is a dolphin symbol from Heraldic Symbols that intentionally keeps the black outline, as does the fleur-de-lys crest in the lower left. The lion intentionally omits the black border.

There aren't a ton of symbols in Heraldic Symbols, and fewer still that are varicolor, but the cool thing is: if you use CA15 Heraldic Symbols to design a coat of arms, and use the varicolor symbols set to the magenta #6, you can then have the coat of arms engraved in brass at the base of the dais in your throne room. Just copy the crest into your map and move it to the floor sheet after placing the brass inlay fill on a sheet directly behind the floor (adding the color key effect to the floor if your map doesn't already have that).

If the ProFantasy Gods are listening: a future annual that I think could really complement the Marine Dungeons would be a "Jungle Adventures" dungeon. It would provide an opportunity to bring in palm trees and coconuts that could also enhance Marine Dungeons. Maybe some swamp building tools, including tree trunks with the ripples used in Marine Dungeons? Lots of colorful jungle foliage. Maybe some giant mosquitos or other bugs? Alligators or crocodiles? Think of the Indiana Jones-inspired adventures! Golden idols! Whips and fedora hats! Aztec-inspired ruins. Maybe a perfectly round boulder for traps. (The opening scene of Raiders of the Lost Ark is my favorite action/adventure opening scene of all time.) Just planting an idea....

Ralf did a Live video where he designed crenellations using a line style. (Has some odd effects when drawing circular crenellations on a round tower, though.)

https://www.youtube.com/watch?v=XnjFECIl7ZU