What were the guiding principles of "manifest destiny"?

Manifest Destiny is a catch phrase describing the belief, characteristic of the United States of America of the 19th century, of the necessity and justification of expansionism, with a hint that the United States of America should stretch from the Atlantic to the Pacific Oceans. During the Mexican-American War and later, the term was used to justify the annexation of the western territories of Mexico (Arizona, Texas, California, etc.). On the eve of the Spanish-American War, the term was revived by the Republicans to provide a theoretical basis for US overseas expansion to the Caribbean.

well that depends on how deep the hole is. you'd first go through te crust of the earth, then the upper mantle, then the lower mantle then the outer core, then the inner cor then you'd be stuck in the core to melt.