The Office on the Disabled is compiling this ongoing list of popular Saint Louis destinations in order to be a resource for people with disabilities in making informed choices whether they are visitors or residents of Saint Louis. Please note that the current information focuses on physical accessibility.
plural abysses. Learner's definition of ABYSS. [count] : a hole so deep or a space so great that it cannot be measured. the ocean's abysses. I stood at the edge of the cliff and gazed down into the yawning/gaping abyss. [=chasm]
Quick Answer. An abyssal plain is a deep undersea area created by sediments overlaying a rocky crust, and they are the flattest places on Earth. Abyssal plains cover one-third of the Earth's surface, as much as all land above water, and they sit near continental borders and underwater mountain ranges.