Why don't the stomach acids burn a hole though your stomach?

The stomach lining is protected from its own acidic environment by a thick layer of mucus, which acts as a barrier between the stomach acid and the tissue. Additionally, specialized cells in the stomach lining secrete bicarbonate, which helps neutralize acid and maintain a balanced pH. The rapid turnover of stomach cells also contributes to healing any minor damage that may occur. Together, these mechanisms prevent the stomach acids from burning through the stomach wall.