It is largely an arctic desert, spotted with mountains, glaciers, vocanos and waterfalls.
(It; is largely; an arctic desert, spotted with mountains, glaciers, vocanos and waterfalls) (an arctic desert; spotted; with mountains, glaciers, vocanos and waterfalls)
It an arctic desert
is largely spotted
an arctic desert, spotted with mountains, glaciers, vocanos and waterfalls
with mountains, glaciers, vocanos and waterfalls