Wednesday, 3 October 2012

Hiking in the shadow of the volcano



The area surrounding St Philippe often gets neglected as a hiking destination in favour of Réunion's more challenging sites. This is a shame as trekking in this low-lying part of the island at the foot of Piton de la Fournaise can offer a different perspective of the island.

near the 2007 eruption

We got dropped off by our transport close to the site of the April 2007 eruption, and from there we walked along the quiet main road until we came to the turn-off for 'Le Vieux Port'.

wild vanilla

From here we walked along a track until we reached the coast. St Philippe is prime vanilla-growing area, and a lot grows here wild (there are no pods though, as the vanilla needs to be hand-fertilised to produce any).

wild vanilla growing on a tree-trunk

vanilla flower

'The Old Port'

beach area, Le Vieux Port

We then headed west, walking along the coastal path (Sentier Littoral de St Philippe).

coastal path, St Philippe

Although St Philippe is not at a high altitude its location on the extreme south-east coast means it gets plenty of rain, and so plant life is luxuriant.

wild orchids

more wild orchids

close-up of wild vanilla

The most common tree here is the screwpine (Pandanus utilis), known locally as the vacoa.


The name screwpine comes from the spiral arrangement of the leaves around the branches.

prop root system of vacoa tree

Vacoas have an unusual root system whereby prop roots grow from the stem well above soil level; these roots help to anchor the plant and keep it upright during periods of heavy wind and rain.

young prop root

The young roots have a rather phallic appearance, reinforced by the fact that the root tip is covered by a removable cap!

removable cap on young Vacoa prop root

Vacoas grow well near the sea as they are salt-tolerant. (Another variety, Pandanus montanus, grows in the highlands of Réunion).

interesting root growth

The leaves are long and spiny and make a thick covering when they fall to the ground. They are used for thatching and to make ropes, baskets, mats, hats, place mats, and bags.


a forest floor 'carpet' of Vacoa leaves


The fruit is called a pinpin and can be cooked and eaten. This, together with the tree's leaves and erosion prevention properties, make it a very useful plant to have around.

pinpin, screwpine fruit

close-up of a pinpin segment

Passiflora foetidaWild water lemon / poc-poc

After a while we started to get a clearer view of the coast, which had never been very far, but whose view had often been obscured by vegetation.


fishing

We soon came across signs of the 1986 volcanic eruption, which is one of only six recorded eruptions to have taken place outside the main caldera.

The 1986 eruption took place from March 20-29

Mother nature always finds a way to grow back after an eruption!

open-ended lava tunnel

At the time, in 1986, the lava flows enlarged the island by 25 hectares at a place known as La Pointe de la Table, pushing the coast 200 metres out into the sea along a distance of 1.5 km. Since then the sea has battered away at this 'intrusion', and today not much of it is left.

Pointe de la Table

In 1776 an eruption whose lava flows were particularly thick took place. As it slowly cooled the basalt fractured into prismatic shapes which some liken to organ pipe columns.

basalt column cliff, Pointe de la Table

coastline

sprouting Fish Poison Tree, known as Bonnet
d'Evêque
 in Réunion (literally 'Bishop's Hat')

Ananas bracteatus/Red pineapple/Ananas marron


After hiking for about 12 km we eventually reached a picnic area, where we had lunch before walking a short distance to the main road where our transport was waiting for us.


fungi

By the way one of St Philippe's claims to fame is that it is the starting point of the annual Diagonale des Fous aka Grand Raid ultra marathon mountain race. (You can see a video about the race here).


The people of St Philippe enjoy gardening, and walking past their gardens to the main road was a real pleasure, as you can see from these photos.


Useful map:
Piton de la Fournaise (La Reunion) IGN 1:25,000 topographic map 4406 RT



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