1-10 At the Lumbridge Crater, near the Divination camp
10-20 To the north of Falador, near the Guthix Memorial site
20-30 Between Varrock and the Archeological dig to the east
30-40 To the South-east of Seers village, towards Keep La Faye
40-50 To the south-east of Rellekka, near the Golden apple tree
50-60 In the Centre of the Karamja Jungle, north-east of Shilo village
60-70 To the West of Mobilizing Armies
70-80 North of Canfis, just to the east of the Slayer tower.
80-85 East of the Mage Training Arena, Access to the Colony can be gained from the North
85-90 On Dragontooth island, A boat can be taken for free from Port Phasmatys
90-95 South of Sophanem. You will need something to deal with the desert heat
95-99 South of the Poison waste. Access to the Colony can be gained from the east, near Castle Wars.
Gratz on 99 :p