sentences:  Tryal Rocks
  
  Tryal Rocks, sometimes spelled Trial Rocks or Tryall Rocks, formerly known as Ritchie's Reef or Greyhound's Shoal, is a reef of rock located in the Indian Ocean off the northwest coast of Australia, northwest of the outer edge of the Montebello Islands group.It is named for the "Tryall", the first known shipwreck in Australian waters, which sunk after striking the then-uncharted rocks in 1622.