Taurere / Taylor Hill Volcano

Taylor Hill Volcano erupted approximately 32,000 years ago, firstly with the wet explosive (phreatomagmatic) style producing a large explosion crater and partial tuff ring around it. The crest of the tuff ring extends from Sacred Heart College buildings on the south side, to the ridge on the south side of Riddell Rd on the north side (diameter about 700 m).
The eruption style switched to 'dry' fountaining, creating a substantial scoria cone surrounded by many small scoria mounds in the middle of the explosion crater. A lava flow flowed northwest and now underlies (beneath the soil) of Glendowie College and another arm of lava flowed east and underlies parts of St Andrews Village.
Extensive quarrying removed most of the scoria mounds on the crater floor in the 1950s-1960s and part of the main scoria cone. Much of the flattened quarry floor was converted into the playing fields of Sacred Heart College. The main scoria cone of Taylor Hill was donated as a reserve by the estate of William Innes Taylor in 1924.

There are numerous terraces and pits on Taylor Hill scoria cone. How were these formed?
Crossfield Reserve across the road from Taylor Hill Reserve is wet and was a former swamp. Did the volcano have something to do with creating the swamp? How?
Using the historic aerial photos can you work out how much of the volcano's scoria cone and mounds was removed by quarrying and what it originally looked like?
What was the quarried scoria used for?