The block "Sepulta Carnaval" is not a commonly known or documented samba block in the available sources. As a journalist specializing in Carnival, I have not found any detailed information about a block with that name. Therefore, I cannot provide a complete and well-researched article about the "Sepulta Carnaval" block based on the information available.

If you have more details or need an article about a different specific block, please provide more context or information about the block in question. This would help me research and provide a more accurate and detailed response.