Lake Peipsi-Pihkva
... that the Battle of the Ice between Teutonic Knights and Novgorodians was fought on top of the frozen Lake Peipsi-Pihkva?
... that the <a class="mw-redirect" href="./Battle_of_the_Ice" id="mwC7g" rel="mw:WikiLink" title="Battle of the Ice">Battle of the Ice</a> between <a class="mw-redirect" href="./Teutonic_Knights" id="mwC7k" rel="mw:WikiLink" title="Teutonic Knights">Teutonic Knights</a> and <a href="./Veliky_Novgorod" id="mwC7o" rel="mw:WikiLink" title="Veliky Novgorod">Novgorodians</a> was fought on top of the frozen <b id="mwC7s"><a class="mw-redirect" href="./Lake_Peipsi-Pihkva" id="mwC7w" rel="mw:WikiLink" title="Lake Peipsi-Pihkva">Lake Peipsi-Pihkva</a></b>?