Especially in his pioneering excavations of the abandoned Medieval village of Hohenrode and Tilleda Palace Grimm was responsible for great advances in German archaeology .
Hohenrode and Tilleda Palace is the first entirely excavated Kaiserpfalz .
Especially in his pioneering excavations of the abandoned Medieval village of Hohenrode and Tilleda Palace , the first entirely excavated Kaiserpfalz , Grimm was responsible for great advances in German archaeology .