|Archipelago||South Shetland Islands|
|Administered under the Antarctic Treaty System|
Tvarditsa Rocks (Bulgarian: скали Твърдица, Bulgarian: ‘Skali Tvarditsa’ ska-'li tv&r-'di-tsa) is a group of rocks off the north coast of Greenwich Island in the South Shetland Islands, Antarctica situated 1.9 km (1.2 mi) northeast of Ongley Island, 1.3 km (0.81 mi) southwest of Stoker Island and 2.6 km (1.6 mi) west of Sierra Island.
Tvarditsa Rocks are located at(Bulgarian mapping in 2009).
- Composite Antarctic Gazetteer
- List of Antarctic islands south of 60° S
- Territorial claims in Antarctica
L.L. Ivanov. Antarctica: Livingston Island and Greenwich, Robert, Snow and Smith Islands. Scale 1:120000 topographic map. Troyan: Manfred Wörner Foundation, 2009. ISBN 978-954-92032-6-4
This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.
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