What is a obilsic?

It seems there might be a typo in your question, as "obilsic" does not correspond to any known term or concept in English. If you meant "obelisks," they are tall, four-sided, narrow tapering monuments with a pyramidion on top, often made from a single piece of stone. Obelisks originated in ancient Egypt and were typically erected in pairs at the entrances of temples to honor the sun god Ra. If you meant something else, please clarify!