The Coolest DIY Project You’ll Want to Try. Posted: April 12, 2025 | Last updated: May 8, 2025 ... Mile-wide underwater volcano ready to erupt off the West Coast.

Steps . Mold your volcano around a 20-ounce soda bottle. (Follow step 1 above to create your volcano structure.) Mix 1 cup of vinegar, 1 cup of warm water, a teaspoon of dishwashing detergent, and ...