Question: What is the height of the mountain on which river 'Lech' is located? Please also provide its longitude and latitude.
SQL: SELECT T1.Height, T1.Latitude, T1.Longitude FROM mountain AS T1 INNER JOIN geo_mountain AS T2 ON T1.Name = T2.Mountain INNER JOIN province AS T3 ON T3.Name = T2.Province INNER JOIN located AS T4 ON T4.Province = T3.Name WHERE T4.River = 'Lech'