What is the maximal elevation of the summit of the shortest mountain that can be found in the island of Madagaskar? Indicate what type of mountain it is.
The elevation of the summit refers to height
SELECT T3.Height, T3.Type FROM island AS T1 INNER JOIN mountainOnIsland AS T2 ON T1.Name = T2.Island INNER JOIN mountain AS T3 ON T3.Name = T2.Mountain WHERE T1.Name = 'Madagaskar' ORDER BY T3.Height DESC LIMIT 1