am doing a fishing spot that i fish in ans it has huge gray rocks how can i make them come to life

Make them out of rice krispie treats, covered with melted chocolate

Grey, black and or brown fondant/ gumpaste marbled together (not too much or it'll all become one color)then roll into various odd shapes. Start with a little ball then squish and form each one a little differently. Hope this helps, good luck!

I do the same as Jeep_girl. I use white fondant marbled with cocoa as well, just to give it a bit of a natural look. They always turn out looking very realistic - I had someone freak out about the kids "eating the rocks" because she thought I'd used real rocks as decoration

Are you wanting smooth river rocks, or jaggedy lava type rocks? In my pictures I made the latter for my duck and winter scene cakes. The directions require a lot of typing which I am loath to do if that is not the effect you want. (I am a painfully slow typist). PM me if you want that type. Otherwise, I use gumpaste or fondant as described. (One advantage to the lava type is that, when crushed, it make excellent gravel.)

I'd sculpt them by hand from fondant. you can marble them using a little bit of grey and white kneaded together until you like the color, but a light shot from the underside is the only way to really make em "POP" rocks weather from the environment so they are normally darker on bottom light on top. I often place all mine on a work surface covered in paper towel and hit them with a little black, brown, blue or green. depending on the color you want
hope that helps?
Mike

I cover rice krispy treats with marbled fondant.

Please be sure to post a picture of your completed cake. It sounds like it will be a beautiful cake. (I just love making scenes...)

If you want to use BC, this is an option: I made cake balls out of frozen cake bits and used BC the same color as mountain (in my cave cake photo) for the boulders. This is more of a Rocky Mountain look, as we live near the Rockies and it was the look I was going for. I mixed black, some terracotta and a bit of moss green. I used raisins for the really small rocks around the cave entrance. The photo really doesn't do it justice. I had also frozen the iced cake and it bled when it defrosted. It looked much better before, but I could only fix it so much.

For the rocks on my train cake, I used melted white chocolate with a bit of milk chocolate in it for a gray color. For the small ones I used a rock mold for a model railray. For the big ones, I used crumpled up foil, made a sort of mold, poured in the chocolate and it made perfect rock outcroppings. I have pictures but they are too big to post.

I mix bits and pieces of the leftover MMF from other cakes, greens, grays, black and whatever other dark color I might have and I just mix them until I get the color I am looking for. I look at the "rock" and I find the darker spots and try to make that the bottom of the rock. I like the shadow look from the dark to the lighter on the top. I hope it all makes sense. I make them in different sizes to make them look more natural.

Vic