.mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}@media all and (max-width:500px){.mw-parser-output .hidden-begin{width:auto!important;clear:none!important;float:none!important))You can help expand this article with text translated from the corresponding article in Finnish. (June 2023) Click [show] for important translation instructions.
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Map showing the four main defence lines built by Finland; Main line, VT-line, VKT-line and the Salpa-line. The Soviet offensive was stopped at the VKT-line.
The VT-line was part of four main defence lines constructed by Finland in the aftermath of the Winter War, with the VT-line being the second main line of defence. On June 15, the partially completed VT-line was breached at Kuuterselkä by the Soviet 21st Army as part of the Vyborg–Petrozavodsk Offensive.[1]
