The Ancient Thracian burial mound (tumulus) known as the Helvetia Tomb is located near the town of Shipka, Kazanlak Municipality in Central Bulgaria. It is dated to the 5th-4th century BC. It was discovered in 1996 by late Bulgarian archaeologist Georgi Kitov, and was named after the Swiss foundation Helvetia which supported Kitov’s excavations at the time. It is the second tumulus from the necropolis around the Shushmanets Mound. The stone funeral bed and stone benches found inside it indicate that the tomb was used as a mausoleum-shrine where Orphic Mysteries (connected with the cult for mythical Ancient Thracian poet Orpheus) were probably performed.
The tomb had a mechanism for locking from the inside. A small furrow at its doorstep indicates that sacrifices were performed there, which is the first time this has been discovered in a Thracian tomb. The Helvetia tomb-shrine was emptied or robbed in the Antiquity period. Yet, the Bulgarian archaeologists have found there several silver artifacts including silver applications and buttons as well as two fully preserved horse skeletons.