In a large mixing bowl, whisk together the flour, yeast, and salt.
Add the chopped olives to the mixing bowl and stir them in until evenly distributed.
Pour the warm water over the dry ingredients and stir everything together with a wooden spoon until a shaggy dough forms.
Cover the mixing bowl with plastic wrap and let the dough rise at room temperature for 12-18 hours, or until it has doubled in size and is dotted with bubbles.
Preheat your oven to 450°F and place a cast-iron Dutch oven with a lid in the oven to preheat for 30 minutes. While the Dutch oven is preheating, dust a sheet of parchment paper with flour and transfer the dough onto the floured parchment paper.
Use your well floured hands to gently shape the dough into a round loaf.
Once the Dutch oven is preheated, carefully remove it from the oven and place the parchment paper with the dough inside. Use a sharp knife or a bread lame to make two shallow, diagonal cuts that are ½ inch deep on the top of the bread.
Cover the Dutch oven with the lid and bake the bread for 30 minutes.
After 30 minutes, remove the lid and bake the bread for an additional 15-20 minutes, or until the crust is golden brown and the bread sounds hollow when tapped on the bottom.
Remove the bread from the Dutch oven and let it cool on a wire rack for at least 30 minutes before slicing and serving.