<prompt> Translate the following text to EnglishMwamba wa Castle na kiti cha Arthur ni mabaki ya mito ya lava ambayo ilizidi kuwa ngumu baada ya volkano mbili zilizowazunguka kuwa zimelala na baridi.  <response>: The Castle Rock and Arthurs Seat are the remains of lava streams that hardened after the two volcanoes around them became dormant and cold. 